Well, if you do decide to, here is p151 of Races of the Dragon. The Draconomicon (p.33) has an almost identical description, but it leaves out all information after sections about clergy, and states nothing about the existence of dragonborn.
BAHAMUT
The Platinum Dragon, King of the Good Dragons, Lord of the North Wind
Lesser DeitySymbol: Star above a milky nebula
Home Plane: Celestia
Alignment: Lawful good
Portfolio: Good dragons, wind, wisdom
Worshipers: Good dragons, anyone seeking protection from evil dragons
Cleric Alignments: LG, NG
Domains: Air, Dragon*, Good, Luck, Protection [Nobility, Storm]
F avored Weapon: Heavy pick (bite)
Bahamut is revered in many locales. Though all good-aligned dragons pay homage to Bahamut, gold, silver, and brass dragons hold him in particularly high regard. Other dragons, even evil ones (except perhaps his archrival Tiamat), respect Bahamut for his wisdom and power.
In his natural form, Bahamut is a long, sinuous dragon covered in silver white scales that sparkle and gleam even in the dimmest light. Bahamut’s catlike eyes are deep blue, as azure as a midsummer sky, some say. Others insist that Bahamut’s eyes are a frosty indigo, like the heart of a glacier. Perhaps the colors merely reflect the Platinum Dragon’s shifting mood.
Dogma
Bahamut is stern and very disapproving of evil. He brooks no excuses for evil acts. In spite of this stance, he is among the most compassionate beings in the multiverse. He has limitless empathy for the downtrodden, the dispossessed, and the helpless. He urges his followers to promote the cause of good, but prefers
to let beings fi ght their own battles when they can. To Bahamut, it is better to offer information, healing, or a (temporary) safe refuge
rather than to take others’ burdens upon oneself.
An equally important aspect to Bahamut is his constant conflict with Tiamat. He continually stands in opposition to her world-dominating schemes. Most recently, she has begun a campaign to heavily populate the world with her spawn. Bahamut has answered this outbreak of evil by recruiting stalwart heroes to his side—the
dragonborn.
In addition to the dragonborn, Bahamut is served by seven great gold wyrms that often accompany him when he visits the Material Plane.
Clergy
Bahamut accepts only good clerics. Clerics of Bahamut, whether they are dragons, half-dragons, or other beings attracted to Bahamut’s philosophy, strive to take constant but subtle action on behalf of good, intervening wherever they are needed but striving to do as little harm in the process as possible.
Bahamut’s chief foe is Tiamat, and this enmity is reflected in the attitude of each deity’s worshipers. Followers of Bahamut respect Heironeous, Moradin, Yondalla, and other lawful good deities.
Quests
Bahamut’s worshipers are most apt to go on a quest to destroy or stop one of Tiamat’s spawn. Whenever they have a reasonable opportunity to do so, followers of Bahamut act to thwart Tiamat or her minions.
Prayers
Worshipers follow the philosophy that one should “pray with one’s deeds, not one’s mouth.” Each act that promotes the welfare of good dragonkind or thwarts the depravity of evil dragonkind is a prayer of action.
Temples
Temples to Bahamut are rare in the extreme. Those that exist
are beautiful, elegant structures with clean, simple lines. The furnishings of a temple are simple, without embellishment or adornment. The building includes meeting rooms where followers can gather to worship or to plan their next campaign against Tiamat’s spawn, as well as smaller, private rooms where individuals can pray, meditate, or rest and recuperate in privacy.
Many gold, silver, and brass dragons maintain simple shrines to Bahamut in their lairs, usually nothing more elaborate than Bahamut’s symbol scribed on a wall. Bahamut is not appreciative of being honored by objects, emphasizing deeds instead.
Rites
Bahamut’s worshipers and clergy don’t have formal rituals or ceremonies. The only activity that one would call a rite is the Rite of Rebirth (see page 8 ), by which a humanoid becomes a dragonborn.
Heralds and Allies
Bahamut uses a mature adult celestial gold dragon as his herald. His allies include good dragons, half-dragons, draconic creatures, and dragonborn.
If a dragonborn strays from her holy duties, Bahamut sends one of his aspects to visit her. The aspect endeavors to talk with the transgressor, and uses reason and diplomacy to remind her of the commitment she accepted when she became a dragonborn.
Aspect of Bahamut --- CR 12
LG Huge dragon (extraplanar)
Init +4; Senses blindsense 60 ft., darkvision 120 ft., low-light
vision; Listen +24, Spot +24
Aura frightful presence
Languages Celestial, Common, Draconic
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AC 25, touch 8, flat-footed 25
hp 179 (12 HD); DR 5/epic
Immune cold, sleep, paralysis
Fort +16, Ref +7, Will +14
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Speed 30 ft. (6 squares), fly 100 ft. (good)
Melee bite + 22 (3d6+12) and
2 claws +17 (2d6+6)
Space 10 ft.; Reach 10 ft.
Base Atk +12; Grp +32
Atk Options Cleave, Power Attack
Special Actions breath weapon, Tempest Breath (DC 18 )
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Abilities Str 34, Dex 9, Con 26, Int 23, Wis 24, Cha 23
Feats Alertness, Cleave, Improved Initiative, Power Attack,
Tempest Breath*
*Described in Draconomicon, page 74
Skills Diplomacy +23, Handle Animal +21, Intimidate +21, Knowledge (arcane) +21, Knowledge (history) +21, Knowledge (nature) +21, Knowledge (the planes) +21, Knowledge (religion) +21, Listen +24, Ride +2, Search +19, Sense Motive +22, Spot +24, Survival +9
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Breath Weapon (Su) 1/day, 40-ft. cone, 12d6 cold, Reflex DC
24 half
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Hook This long, sinuous dragon is covered in silver-white
scales that sparkle and gleam with a light all their own. Its catlike eyes shift between the blue of an azure sky and the chill of a frozen glacier, as its mood determines.
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An aspect of Bahamut is an embodiment of a small portion of the deity’s life force. Unlike the much more powerful avatars of Bahamut, an aspect of Bahamut is not an extension of the original deity. Rather than extending the deity’s personal self, an aspect is a short-lived echo of the deity’s will, a temporary biological expression of divine power.
Occasionally an aspect of Bahamut arises spontaneously on the deity’s home plane or a closely related plane. More often, aspects are called forth on other planes by magic of some kind, including the planar ally and planar binding spells or the summon aspect of Bahamut spell (see page 118). In any case, they are short-lived, usually fading back into nonexistence within a day.
Aspects of Bahamut are more willing than most divine aspects to converse with mortals. Their diplomatic skills are legendary, though they only speak from the position of superiority due them as representatives of the Master of the North Wind.
Combat
An aspect of Bahamut is a fantastically intelligent combatant. It is fearless, caring nothing for its continued existence unless its existence is strategically more important than the tactical damage it can inflict by fighting ingeniously to the death. Its coldly calculated rage, its capacity for flight, and its penchant for well-timed counterattacks make it far more dangerous than a normal dragon, whose anger and strength in combat are derived in part from its awareness of its own mortality.
Unless it suits its purposes to be surrounded, an aspect of Bahamut is quite cagey about picking off its enemies one by one. Whenever possible, it chooses the battlefield to prevent its foes from using their strengths and their prepared spells. Although an aspect cannot cast spells of its own, it is willing to team up with spellcasting allies who can provide it with powers that increase its opportunities for surprise.
Also, here's Eric L. Boyd, one of the authors of the aforementioned 'Dragons of Faerun' commenting on this very topic: http://boards1.wizards.com/showthread.php?t=726519