Vista - K7 antivirus problems

Let's keep this brief:

I downloaded the free trial of K7total security and liked it, so I decided to read some reviews to ensure its quality, and there after I bought it. After buying the full version I was offered a download to install the full version.

No problem, but what I did next only makes sense because I did it after work at around 1 in the morning... technicall today.

What I did was delete the K7 folder from my program files, but now when I try to install K7total security the full version, some hidden part of k7total security from the trial version says it is still in my computer. I went to uninstall the program from control panel> uninstall programs list, however when I try to uninstall K7total security it says that it can't find the program, which makes sense because I deleted it, but then afterward it still remains on the uninstall list. And I still can't install the full version...

The message looks the same no matter what I do.

file 'C:\ProgramFiles\K7
computing\K7TSecurity\Common\K7TSSettings.dll' can not be found.
Make sure the file is on target system or installed already.

So I turned off the computer and decided to deal with it in the morning,
and here i am. Any help would be appreciated, as I cannot find any related articles on the problem I am having. Thanks.

Removal tool for Kaspersky Lab's products ........ Service messages