All right, i'll write a rogue guide from what i've been using. I personally, am going with a 30/8/13 build. Assassination/Combat/Subtelty. (Build up the combo points and crit their ass to death).

Assassination
Malice 5/5
Imp Eviscerate 5/5
Ruthlessness 3/3
Relentless Strike 1/5 (point holdr)
Lethality 5/5
Imp Expose Armor 2/3
Cold Blood 1/1
Improve Gouge 3/3
Imp Sinister strike 2/2
Improved Backstab 3/3
Murder *put one point*

Combat
Improved Ambush 5/5
Improved Backstab 3/3

Subtelty
Master of Deception 5/5
Opportunity 5/5

Yeah i kinda fucked the orders up because I can't remember where they all are off the top of my head, i have a scratch paper with em written down, but that's basically all that you NEED. You are going to have extra @ 60 but whatever looks good to you, most rogues like walking @ 90% stealthed (which is nice) or put more in combat. Play around with it.

Ah yes, and for your weapon, I've found better that you put the slower weapon in main hand and faster in off hand, for lower level. And combat rogues you don't even need daggers, go full swords, but they kinda suck, so don't waste your time.