Hi, I'm new to these forums, and I just received a computer from an organization called Free Geek for volunteering there for 40 hours. It's a HP business desktop with a Compaq dc7800 case and a 0AAch motherboard, and I'd like to replace this mobo so that I can get a 4th gen Intel Core i processor and DDR3 RAM (instead of DDR2). Also, I can only fit single-slot gfx cards in it right now (like my current one, a Nvidia GT610 with 1gb of DDR3 RAM). Eventually, I'd like to get a new mobo that can fit a dual-slot in it, like a GTX gfx card, or something. Can anyone suggest anything to me, or am I better off selling it and saving up for new parts? I would rather not get a new case, so if it comes to that I'll just sell it and get new parts (what's the point of that if it'll pretty much be a new computer entirely, AND it'll cost about $60 more to upgrade?). Any help would be much appreciated.