I cant seem to get 0.81 to install, It gives me the error:

Setup cannot continue because some system files are out of date on your system. Click OK if you would like setup to update these file sfor you now.
You will need to restart windows before you can run setup again. Click cancel to exit setup without updating system files.

I've hit OK, I've Rebooted after its done more stuff and when I go to run Setup again I get the same message again.

I'm using Windows 2000pro Service Pack 4