I personally think its pretty easy to use but there are plenty of people who don't agree.. Haven't been able to use CS2 yet, but I'm sure its better than what I'm using. oh well. I'll last with the 7.
Well if you are planning to buy it, wait until the spring. CS3 Is coming out, and if you want the beta version is available on the website I believe. As for me, I'm using Photoshop 6.0 and it hasn't let me down yet.
My dad has photoshop 4 on a disk. It was kinda cool, You can burn that one all to a data CD after it is installed and run it off of a disk on any computer! (thats what i used in highschool for a while) lol