Hello! I have a few questions about upgrading my mac in order to use the new iPod touch 4th gen (requires 10.5 or later). I really need to do some upgrading anyhow, and I'm hoping someone here can help me. First, here's what I'm working with: I have a PPC G4, dual processor 1.25 GHZ, 80GB HD, 768mb RAM, running Tiger 10.4.11. I use CS2 for freelance graphic design (and very occasionally Quark 4 on OS 9). I have 2 external hard drives backing up my system, storing personal files, photos, music, etc. Yes, I've got an oldie, but it's been cranking out loyally over the years with tune ups and TLC, and I need it to live on a while longer. 1. Can I upgrade to Leopard 10.5 (not snow leopard) and still use my CS2 programs? From what little information I've been able to find, the answer is most likely yes, but with quirks and decreased speed... which I can deal with. I simply cannot afford a new mac (nor the software upgrades required once that happens), so I need to work with what I've got. If the answer is yes, then... 2) are there any other updates in between 10.4.11 and 10.5 that I will have to purchase before upgrading to 10.5? 3) Also, since I will have to upgrade to a minimum 1GB RAM, can anyone please suggest a good site to buy it from? There seems to be a million options out there. I know that I should really have more RAM anyhow with what software I am using. I really do appreciate any help at all. I've been a frequent visitor to this forum and have been helped numerous times by others and their suggestions, but I have never posted a question until now. Thanks so much and happy holidays!!