Hi I have iMac 4.1 from 2004 with Intel Core Duo (2GHz), 2GB RAM and with Mac OS X 10.4.11. Is there any chance I could upgrade it to 10.5 or more. I'm starting with with Mac so i do no know much about it. I've tried to instal Mac OS X 10.5.2 but then popped up an error message"Mac OS X cannot be instaled on this computer. " so i don't understand why because it meets the HW requirements of the Snowleopard. I'll be glad if someone can help me.