I did this a little while back and I wouldn't mind seeing some other dragon slaying builds.
Mine was Warblade 10 Vassal of Bahamut 10 - Human - 10d12/10d10 - Full Bab - Alright Saves. 4th lv spells
Main stats are Str - For hit, damage, jump,ect. Dex for the getting the most out of tumble, Armor...