My advice would be to just experiment a bit. You'll find your own preferred playing style and the stats that go with it. Be it mage, warrior or rogue with any combination of weapons, spells and skills. The sheer possibilities in building a character makes it hard to dictate a division of points. For example, a 2-h sword wielding deathknight, serving as a tank character, would be focusing on strength and con mostly, then speed and agility (to be able to get a hit in when attacked by groups and to use sharpened weapons, respectively.) That's a pretty powerful combo with enough skillpoints spent on the 2-handed slashin skill.
