Yet again I post for your image editing needs...
http://www.gimp.org
It has almost every feature of Photoshop, is easy to use, works flawlessly with images of every type it supports and can read from and write to photoshop AND paint shop pro files....
The best part beyond that is that it is 100% and completely FREE and can be used on UNIX & Windows....
http://www.gimp.org - main website
http://www.wingimp.org - windows version
http://www2.arnes.si/~sopjsimo/gimp/ - alternate download site with plug-ins and stuff all ready to go...
Enjoy it FREEly...