Okay -
Race: Orc
Sign: The Thief
Spec: Combat
Attributes: Luck and Endurance
Majors:
Destruction
Restoration
Mysticism
Mercantile
Acrobatics
Marksman
Sneak
I'm not kidding. Use that build and put him in heavy armor and give him a melee weapon and go out and beat the hell out of things. He'll be uber by level 20.
If you want to hit level 50 then this will do it.
You will however,level very slowly.
Alot of people like to level slow,so it's not a bad thing.