This is an obvious enough spoiler post, but just for good lucks sake...
***SPOILER***
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The Wave (halberd +4)
Shaft: In the Astral Prision, on the Cambion.
Blade: Off Of saugin prince in Underwater city
Crom Fayre (warhammer +4)
Scroll: Shadow Dragon
Gaungtles of Ogre Strenght: In Planar Sphere, on a halfling.
Girdle of Frost Giant Strength: Under Dark, in the Saughin section,Deamon
knight (have to sacrifice an animal to get him
there)
Hammer Of Thunderbolts: In the sewers under Athkalata, in the Illithid section.
Gesen Bow (Short Bow+4)
Shaft: In Rejik Hidesman's shop. 3rd floor.
String: Under Spellhold, in a chest guarded by Golems
The Equlizer (long Sword +3)
Pommel Gem: Irenicus's Dungeon
Blade: Underdark, in the Beholder section, on the Elder orb at the entrance
Handle: Underdark, Illithid section, on the table outside your cell.
Other Items Cromwell can make/upgrade:
Mace of Disruption +2
Mace of Disruption: In Bhodi's lair, in the pool of blood (top left room)
Illithium Ore: Neb, the bridge discrict (need to have the Sir Sarles quest)
Red Dragon Scale Armour
Red Dragon Scales: Fikragg, windspear hills.
Shadow Dragon Armour
Shadow Dragon Scales: The shadow dragon, Ruined Temple (near Umar hills)
And thats about it, hope i have'nt missed any out
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