Can anyone PLEASE tell me how to uninstall SkyUI MANUALLY?

For some reason, the NMM (Nexus mod manager) tells me it can't find skyrim.esm, when i really DO have Skyrim.esm

is it because skyrim.esm in my skyrim directory begins in a capital letter? because in the error message, it says "skyrim.esm" while when
i search for it, I find Skyrim.esm

Help?

You can ask in the SkyUI thread: http://www.gamesas.com/topic/1373174-relz-skyui/