Hello
You will find everything here: http://forum.warmane.com/showthread.php?t=332641
But to answer your question, BiS weapons for PvE Combat rogue are:
MH: Havoc's Call, Blade of Lordaeron Kings
OH: Scourgeborne Waraxe
You will find that most of the rogues on warmane have those 2 weapons.
Also if you never played a rogue before its a good idea to read whole that guide I sent you. It will help you to understand your class.
Edit: For pvp weapons I guess you will need a pair of daggers. MH: 1.8 speed, oh 1.4-1.5 speed.