Can an iMac 24" from early 2008 be put into an older man like for example the iMac G5? If so would it run Leopard which is the software I still had on it (long story but wanted to upgrade to Snow Leopard at some point). But my computer just died and the repair guy said it was video card and that it would be cheaper to buy a new computer, I love my macs and realllllyyy don't want to go back to pc if I can't help it but if I have to I will. But if I use my internal hard drive from my iMac as an external hard drive will I still have my programs on there also?