First suggestion is to go to http://elitistjerks.com/forums.php#class_mechanics
(Elitist Jerks), They have the best info on class mechanics. There are also a number of programs/sites that can help you optimize your avatar. I use http://shadowcraft.mmo-mumble.com/
mostly, RAWR is iffy for rogues. The problem with these two are that they optimize for PVE, but shadowcraft will give you stat weights for your character. For PVP you don't need your hit up as high because you are not fighting lvl 88.
One other thing to know about rogues, we don't get huge crits.