and finally - a remark... i found a funny thing in dd - don't know is it a bug or intended feature... you have 4 primary stats in dd - just like in diablo - but with different names... dexterity (in diablo) is agility (in dd) - but when you find charms that add to this stat - the description says "adds a DEXTERITY bonus" - not agility...:)
Like I said, this game is quite ripoff diablo... and they forget to change names of some attributes...
And by the way: Strength gives you extra damage and extra carry weight.
Constitution gives you nice stamina (useful for warrior) and some hit points too. My char has over 1000 hp...
Intelligence is neede for wizard... can't have too much mana...