Have you tried reinstalling the program over the original and then seeing if you have an option to uninstall? Failing that, you might have to remove it manually, but it is a well known reputable product so should have a proper uninstall option.
Also have a look within the program files of CounterSpy and see if there is an unwise.exe or uninstall.exe file you can run manually.
If all that fails, you will need to make sure the program is not being run in the background (check with Task Manager > Processes) and under msconfig > startup before deleting the program folders and then running a registry cleaner to remove the remaining traces of it. The program CCleaner (click here) will be able to do this for you.