I used Gimp, PS 7, PS CS, and PS CS2. PS7 is ok, unless youre really into high graphics, then I suggest CS or CS2. Cs2 took up more space and had more filters and brushes. Gimp is another alternative. Almost as good as PS
Well for GFX PS7 will do, if you plan on do photomanips and stuff like that I would recommend PS CS2 which I have. Sure it uses more resouces, however all brushes work with it, has more filters (Good for photomanips) and some other stuff good for if your a photographer, However for GFX if you wanna go legal and you don't have 300-600 bucks in your pocket to buy CS2 than go PS7. However CS2 the best Hope this helps, ~OWNAGE TIME
the difference between photoshop 7 and CS2 is very miniscule unless you're like a hardcore expert and you use many advanced options, but if you want something a little bit more affordable, get 7.0
I would reccomend not to get CS2. It lags like all hell and tags really long to load. I myself used to use PS7 but not use CS.