Ok here is the Rogue talents here are the best talents to level with and also to raid with later on if the guild decided that they wana do raiding. The talents should be bought with the following order for best results.

2 Improved Sinsiter Strike
5 Malice
3 Ruthlessness
2 Murder
1 Relentles Strikes
5 Lethality
4 Improved Poisons
5 Lightning Reflexes
3 Improved Slice and Dice
5 Precision
1 Improved Kick
5 Duel Wield Specialization
1 Blade FLurry
* 5 Sword Specilization (This can be changed to what weapons that you use)
2 Weapon Expertise
3 Aggression
2 Vitality
1 Adrenaline Rush
5 Combat Potency
1 Suprise Attacks

ok here is the leveling guide for the rogues this is also a good raiding spec so if u wana do this and not change for raiding this is the spec to go also change your weap crit chance to what ever weps u like to usem generally take swords or fist weps in my personal favs couse of the more crit and an extra swing.

http://www.worldofwarcraft.com/info/classes/rogue/talents.html?tal=00532010504000000000000000002520520500050102231005212510000000000000000000000000000

Combat and Assassination is for Pve and sub is for pvp

currently i think assassination is gd for lvl 80 rogue but not sure since i ain't 80 yet :S

assissination is more for if u are raiding and doing a load of instances combat is for nearly all types of gaming so it is good for leveling