Programs: cracks and trial expirations

I installed Jasc Animation Shop 3 eight months back, but forgot to crack it. Now that I've reinstalled it, I get a message saying the eval period's expired, press Quit to close, etc. How can I delete all record of it having been on my comp so I can crack it this time?

www.adobe.com

>>2
God no

www.opera.com
www.lunix.com
Even
www.gimp.com

But no, not Adobe!

windows i presume.
registry editor

delete system32