I have gotten more and more into Apple products lately. I started with the iPhone 3G, the the 4, and now an iPad. I already have an HP laptop, but I'd really like to get into an older/used Apple desktop. In a perfect world I'd go all out and get a new iMac, but it's not in my budget. I have seen a few prospects on craigslist, but I am not really sure what to look for, good or bad. I don't need anything too crazy, just looking to get my foot in the door and do some basic stuff (Internet, music, video, etc) Any help/advice is appreciated. Thanks!