Check ebay for an older copy of Photoshop. Most of them come with the transferrable serial number, so you can do upgrades as they too come on ebay.
Anything 4.0 and newer should work.
OR
Just buy a copy of the LE version on ebay. Most of these have come with a new digital camera or scanner and the owners dont need it. They go pretty cheap. They arent upgradable, but they do give you a chance to do alot of stuff the full blown version of Photoshop will do.
With a highquality picture, a steady hand, and some practice, the magnetic lasso does a pretty good job.
I did that first pic in my webshow in about 5 minutes. (so if i had slowed down, blown it up more, and put more time into it, it really would have been clean!)
I ditched the typical mouse a long while ago in favor of a Kensington Orbit. Its a small two button mouse with a track ball on the top about the size of a ping pong ball. Makes my graphic work much easier. (and I dont have to have a HUGE open space for a mouse)
Good luck, and Thanks again yall!
Rain