I haven't played in a long time, but as I remember strength increases all melee damage done by your character. Does this mean that spells that deal normal (physical) melee damage will also deal increased damage based on my strength?
Also, the similar question goes for Intelligence. It increases all elemental damage by your character. I do remember that adding intelligence did give me more damage from my staff attacks, but does it also increase damage done by spells such as lightning, ice shards and such?