Ok first of all don't take blade twisting its useless in pve and not even that good in pvp (Crippling poison???).
For pve u need Inp. slice and dice for sure.
Try this build for pure pve dps. Keep your slice and dice up and spam SS
http://www.wow-europe.com/en/info/basics/talents/rogue/talents.html?3053001050000000000000233052020050150023212510000000000000000000000
Just move the 5 points in Sword spec around to whatever weapon your sporting.. and get a fast off hand something 1.8 or lower.
Deadly poison or instant is your friend in raids too.
Hope this helps