Revo uninstaller wasn't working, so I did the following. Takes 15 seconds and then you can just remove Immunet via the standard "Add or Remove Programs" method.
Launch the command window:
* open the start menu
* type "cmd" (without quotes)
* right click on "Command Prompt" and choose "Run as administrator"
* on the command line, type "sc delete ImmunetProtect_6.0.6"
It will confirm that service was successfully completed and you can now go remove it as normal. Of course...now I have nothing protecting my systems...so, yeah, that's a problem.