I have an iMac g5, a power pc. I've been waiting to update things but I'm finding more and more applications, games, etc require a newer version than I have... I would prefer not to get a new comp if possible... I currently have a 10.3.9, pretty old I guess... I think I can to Leopard, I have (2)512mb ram and 64gb of disc space available (and a 130gb external hard drive).

Where would be a cheap place to get a newer version?

I have an iMac g5, a power pc. I've been waiting to update things but I'm finding more and more applications, games, etc require a newer version than I have... I would prefer not to get a new comp if possible... I currently have a 10.3.9, pretty old I guess... I think I can to Leopard, I have (2)512mb ram and 64gb of disc space available (and a 130gb external hard drive).

Where would be a cheap place to get a newer version?

Check the requirements for Leopard. Snow Leopard is for Intel-based processors so you can't go to that one. BTW, Mac OSX is pretty cheap. It's not like Windows. Just buy it at the Apple store

Snow Leopard is the newest version, it is pretty affordable to upgrade and your computer would be able to handle it. Check it out, I really like using Snow Leopard, should make your computer like new! This seems like a pretty cheap place to get it http://www.softwaremedia.com/product/7700.html

The highest version of OSX that you can install on a G5 based mac is 10.5.8