From your secondary, get Reconstruction, Dull Pain, Integration, Moment of Glory, and Instant Healing. From your primary, get a new primary. (Just kidding. Grab Build Up, AS, Placate, and a good heavy hitter).
Now, as far as pools go, you'll probably want Hasten/SS, Stealth/Invis/Phase Shift, Assault/Tactics, and most likely Combat Jumping/Super Jump. Fitness is an option, but /regen isn't very endurance heavy to begin with.
Don't worry about your combos. No PvP'er worth their salt is going to stick around long enough for you to really pull those out. Closest you'll probably get would be the Empower combo. Sadly, DB isn't very well suited for PvP.
"the reason there are so many sarcastic pvpers is we already had a better version of pvp taken away from us to appease bad players. Back then we chuckled at how bad players came here and whined. If we knew that was the actual voice devs would listen to instead of informed, educated players we probably would have been bigger dicks back then." -ConFlict
Hehe, yeah I knew long after I made and lvled her to 50 that I wasnt gonna be doing very much in Pvp, but its always worth a try. Thanks for the advice 
@SinfulD - So many 50's, and still going!
My first villian was a DB/Regen stalker. I love the toon, very fun, good combos... but very lost in terms of how to build her for PVP. Ive heard that concealment is good for extra defense, and heard that Phase Shift helps alot as well... but, what powers do I have to elimnate to get better powers? I think the 'combos' is whats messing me up, I feel that I do more dmg when completing a full combo, but how is that gonna work in PVP? I dont have the time or Hps to stand there and dual out this combo. So...what do I do? Im so lost.
Can anyone point me in the right derection? Plz?
@SinfulD - So many 50's, and still going!