been away for a while...sorry for not responding. You cannot remove registry entries.

So:

1. Install Program (do not run it)
2. Goto the install directory %programfiles%\Corel\Corel Paint Shop Pro Photo X2
3. Delete PsiClient.dll from the program files folder (back it up first or rename
if you might want to reverse this procedure)
4. Goto C:\Windows\System32 and find PSIKey.dll
5. Copy PSIKey.dll to the install directory in 2. Rename PSIKey.dll to PsiClient.dll
6. Click Start->Run and enter: services.msc
6. Find the ProtexistLicensing service, stop the service, and disable it
7. Click Start-> Run and enter: sc delete ProtexisLicensing
to remove ProtexisLicensing from Services list
8. Go back to C:\Windows\System32
9. Delete the files: PSIService.exe and PSIKey.dll


pretty easy....and works. Of course if you add service pack to program later this protexsis will be installed again.