For one u can use Photoshop or Paint Shop Pro, but really Photoshop is the way to go. For bg's....just ask for tut's or go around forum sites looking at some, it's not that hard cause there are like a billion out there >>; Why do u ask such a question, lol, when u could of just PM'ed the sig makers on here and asked that or u could go and Google it, it's really that simple. Go to the Media section though, Omega should have a sticky thread where u can get CS2 for free, so go and check that out.
Alittle of advice though, Search before u make a thread. It'll be alot easier on u, and easier on everyone else so they don't have to post a link to something that's already can be answered about. U don't want to get fussed at by the mods or admins on here >>;