Jarmo: Probably started already, but anyway. Here's the most important stuff that comes to mind.

Cleric Domain is important. Law and Holy give the ability to create weapons that make extra damage to chaotic and evil. And about everything is chaotic evil in the temple.

Reach weapons, attack of opportunity and cleave play a huge role here. Melee fighter specializing in a reach weapons with combat reflexes and cleave is awesome.
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Wizard/Sorc, either works, but you'll need specific learned spells to make some specific magic weapons and items, so wizard can be easier.

Create wondorous items, and magic arms and armor feats are something all casters should take. Spell penetration and greater spell penetration if you want to harm some later monsters with high magic resistance.

There won't be many very challenging locks or traps. You'll be best off multiclassing the rogue at some point. (and having her also carrying a reach weapon)

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Make your own kb shortcuts. 5-foot step, ready for approach and such, makes life a lot easier.
Don't give up. The game is mercilessly hard for beginners and early on, but awesome when you and characters know what to do.

coroder: I was thinking for the Rogue to get some fighters levels but im not sure of the mix, I know fighters get a good few bonus feats but I was thinking of making the character for flanking for sneak bonuses. Do you, or anyone else, have much experience with those types of builds?