Aftermarket Keyless/Remote start question

Hey TW,

I am still new to this site but purchased an 04 PreRunner TRD a couple months ago and the truck has an aftermarket keyless entry/remote start. The question I have is, does anybody know how to locate a program guide or is it programmable. Like when I put it in park I would like the doors to unlock and they don't and would like them to remain unlocked till I put in drive. The only info I have is that the remote says "AVITAL" I'm guessing that is the brand.
One more quick question. Has anybody not put on the "billies" My truck needs front and back shocks. I don't need anything for a lift just am looking for a better ride. The truck has 93k and looks to have the original blistiens. Took the truck to a midas in the KC area and wow they want like $800 to do the fronts and like $300 for the rear. That is crazy I thot. Hope I can do this one on my own. Hopefully my skill level will be enuff.

Thanks Guys