my sis is on mac g4 wiht i think 768ram and 10gig hard drive (we got it for $50) so she wants a bigger drive she needs maybe 15 more gigs but i figure she can get a 80 for almost the same price. so are basicly all ide drives compatable with macs? i figure ill get the cheapest 80 gig avalable. i just want to make sure they are compatable.