Truly some great stuff Tetsubo!
While you save for a new edition of Photoshop, here's an alternative to use/learn in the meantime. It's got a lot of the same features as Photoshop, so if you "progress" to Photoshop you should be able to use a lot of what you used with this program.
It's called The GIMP (GNU Image Manipulation Program) and you can find out more about it here:
http://www.gimp.org/
If you're running a Windows OS you can get GIMP for Windows here:
http://www2.arnes.si/~sopjsimo/gimp/
And, of course, the best part is that it's FREE!