Harvey, when you open revo uninstaller, you will see a grid of software. 
Choose what you want to uninstall, right click the program, down arrow once, 
and just go through the routine.  I select all the regestry items, because 
if there is a problem, I re-install the program, run revo again and this 
time, leave the regestry items.  I have never had to re-install anything.