Best Photoshop for B&W G3?

[kriegvision]

I have a spare Blue & White G3 and would like to give it to a friend to learn some Photoshopping. What version should I look for to install? The G3 is running Mac OS X Tiger and has 512 MB of memory. It has the stock 400 MHz G3 processor, but it also has a Radeon 9200 PCI card. Thnx for any help!

[Turboladdade]

Adobe's web site says CS2 will run on G3s. I personally have used up to Photoshop CS on my own Blue & White, before I upgraded the computer. Certainly Photoshop 7 can also be an option.