I know when your good your supposed to be all nice and "yes i master paladin will fetch your cat" and "yeah i will go kill evil henchmen cuz theyre there"... But what do you do if your evil? is killing townspeeps a GOOD IDEA? and what about theiving, does anyone use theives for there ability to pickpostet and steal from shops? if so when would you use it and how is it effective, im kinda new no spoilers plz.

Well, killing innocents is never good idea, unless you want to drop an Evil character from your party, but you want him back later. (If your Reputation is high, Evil NPC's won't like it, and if you drop them from your party, they will walk off and disappear forever. Get around this by lowering your Rep, and THEN telling the guy to wait for you to come back.) Things to do if you want to roleplay Evil are:
Backstab a lot (Dagger of Venom)
Pickpocket everybody with a name
Burglarize every damn building you can find (especially Gullykin, they're dirt poor already)
Kill Good- or Neutral- aligned NPCs
And possibly the most evil: In areas with both innocents AND hostile creatures, Charm the townsfolk so they walk in front of you and become cannon fodder against the monsters. You don't lose Rep. if YOU didn't kill them.

Very nasty trick there Six, very funny though.

Thanks, Sir Jorlon. I always like to experiment with everything, and see what happens. ;) I tried Charming that cat at the Nashkel Mines and had it attack the rats, but all it could do was knock them unconscious. Not much of a ratter, if you ask me.

Anyway, about being Evil: You'll also find a bunch of quests that will appeal to your heroic, do-gooder nature. If you wish, take the opportunity to screw with those poor souls who need your help. If the destitute little girl tells you that her grandma's deathly ill, and she needs a special elixir so she will be well enough to save the orphanage, then you should just go ahead and kill the undead beast that's guarding the elixir. Then have a Good-aligned NPC join your party and have him drink the elixir all up, just to see what happens. If you can't drink it, drop it down a sewer or something. Don't forget to visit the little girl again and give her some flowers, with your condolences for her dear dead grandmother. Then pickpocket her, of course. (Don't worry about spoilers, I'm making all this up.)

As for stealing, Good people do it too, they just shouldn't do it as much if they want to roleplay Good. The party I'm using now is led by a Paladin, and the very first thing my Mage/Thief did was get 100% Pick Pockets, and then he moved on to Locks. Because I'm playing a Good party, I only rob from shady characters.....or if I know they've got something I REALLY want. There is SO much good stuff that can only be obtained by Thieving (or cheating, of course); you can even get MULTIPLES of supposedly 'unique' magic items, simply by knowing who to pickpocket, and when/where to do it.

You know, for a guy who has yet to play an Evil party, I sure do know a lot about it. :D