Clean Space 8.0

I downloaded Clean Space 8.0 and had it "hide itself" on my computer per a menu selection. I then went to their web site and downloaded version 8.8 thinking it would replace the earlier version on my computer. Well I then had two different versions on my pc. I removed version 8.8 but can not figure out how to remove the hidden version 8.0. I want to purchase version 8.8 but I sure don't want two versions on my pc at the same time.

How do I remove the hidden version??

I run Windows 98 if that matters.