My ever so humble opinion on attributes...
Go for what you like. Unlike in AD&D, most of the attributes have at least
some use to every class.
Most importantly: Get even numbers. The D&D3 system is not about stats, it's about stat
bonuses. The bonuses are easy:
8-9 : -1
10-11: 0
12-13: +1
14-15: +2
16-17: +3
18-19: +4
And so on...
In other words: if you take too many uneven stats, you're shooting yourself in the foot.
Two notable exceptions to this "rule":
- Warriors need Int 13+ (and/or Dex 13+) to get some fighting Feats. Int 14 doesn't do much for them, though. Note that it is still unsure how Feats are handled in NWN. Even then, the Feats may not be worth getting high Int for.
- Spellcasters need 15+ in their spellcasting stat to be able to eventually gain access to level 9 spells. This is assuming you place all of your "level up" stat points into that stat as well.