Hey guys, My grandparents are Mac people and live in Florida, my parents have a ****ty old PC and live in Chicago. After checking out the iSight at the Apple store, I've decided that getting my parents an iMac (or eMac) with an iSight so they can video conference with my grandparents would be an awesome present. I don't really want to go crazy with buying stuff, as my parents don't do anything with their computer besides browsing the internet, word processing, and email checking. So in their case a new eMac is kind of going overboard. I'd like to get them on a Mac platform so they can use iChat AV and essentially do what they were doing on their PC. Would an older iMac work, or do I need to spring for a newer iMac or eMac to run that software decently?