unable to remove programs in Windows Vista

I have earlier installed a program called Power Cinema 2.5 by mfr Cyberlink.
at that time a Windows Vista combability support function helped with the
installation. (At first vista refused to install (An error tells that the
program is only for Windows 98, 2000 or higher) and then this Vista
compability function popped up and asked if I wanted support with the
installation. I have now purchased Roxio Easy Media Creator 10 and during
that installation I was asked if I wanted to remove the Power Cinema 2.5,
(because of a conflict with Roxio Cine 3.9) which I confirmed, but the
program Power Cinema cannot be removed. An error tells that the program is
only for Windows 98, 2000 or higher = the same message I got at the
installation time, but at this time there is no compability support.
Any ideas how to remove the program?