I'm not following you. First, are you looking at the REVO uninstaller to do something you don't think you can do? Using Add/Remove Programs in the Control Panel OR an uninstaller that might be a part of the program itself is the best way to go. And I recommend doing a search for left over files and folders after the uninstall. Sometimes a few remain.
Keep in mind that it's best to use what is available in your operating system to do as much as if can without downloading a software program to do it. Users can end up with multiple programs taking up 'space' and memory, to perform a function on their system that can be done within the OS itself.
I don't understand your reference to a Microsoft Add-on. What are you referring to? I don't think you mean the Manage Add-ons feature through Tools. Keep in mind that while the two words are often used together, Microsoft and Windows don't mean the same thing. So if software says 'for Windows', that doesn't necessarily mean MS put it out.
You won't have much fun if you stay away from all downloads! Know that Freeware and Shareware have the best chance of including something that you don't want- not all of them, but programs like screen savers, cursors, etc. are best to stay away from.
Do you have something in particular that you would like to have on your system?