Ok thanks guys. I tested this script on my local machine... and I changed the script to just run for my computer....
$sComputers = 'wrender-lap'

I put the kix32.exe in a folder with the script which I called wsusfix.kix and ran them like this...
kix32 wsusfix.kix

It exits, so I assumed the script ran. When I go to check in my registry on my computer (wrender-lap) the entries are still there... I tried refreshing using the F5 key.