Fully uninstalling CloneDVD

[SlaveUnit]

I just bought this computer from a friend and I was interested in the 30 eval download. Everytime I install it and try
to run the .exe it gives me "Your 30 day eval time has expired." The program was not on the system when I bought. It
is possible though that he took it off from an expired install. Is there any way I can install this program again to try it out? I am running WinXP. Thank you for your time.