Hi there. My friend (who is not a techie by any stretch of the imagination) was given a Power PC. G4 by a friend of hers as they are upgrading. This is the one http://www.everymac.com/systems/apple/imac/specs/imac_1.25_20_fp.html I said that I would do some research for her on it. Firstly is it user upgradeable. She is a keen photographer and would be looking to run Photoshop on it which is RAM hungry. This model only has 256mgs of RAM so is it possible to put in at least 2gigs of RAM ? If it is possible to upgrade the RAM, what type am I looking for ? Secondly the o/s on it is System version Mac OS X 10.2.8 (6r73). Is there a max to the type of OSX which can be put on it. I use a 21.5" iMac which has Snow Leopard on it (10.6.8). So I am familiar with this o/s. Can hers be upgraded to this or is there a limit ? These are my questions for now so thanks in advance. I am sure I will have some more later.