Hi Matthisco,
i) Just backup your "neo-query.xml" file which is located
under "your_cf_installation_directory\lib" directory, and restore
it later.
ii) As for the .jar, and .class files - Only if you've
deployed anything with those extentions in the lib directory, then
backup it otherwise just ignore it.
iii) Yeah.. You can just uninstall your CF through add/remove
programs as you said....