Hello, I've got a Power Mac PC G4 (gray/silver tower): 512 RAM, 800 MHz speed, 23 GB space. (any other info needed?) Can I install 10 and have it run smoothly? This is at work, and we're on Quark most of the day w/ a little Photoshop and Illustrator. I know more RAM is most likely a must, anyone know how much to add? Anything else that should be added? Thanks!