I get a headache from all those capitals.

If you already started messing with the registry the only way of removing all traces of the old version is to continue messing with it since the Windows uninstallers will not work anymore.

LimeWire offers a WindowsNOVM version as a zip somewhere on his download page (it's hidden behind a link for additional installers). It should run directly after unpacking it if you execute the .bat file.

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Morgens ess ich Cornflakes und abends ess ich Brot
Und wenn ich lang genug gelebt hab, dann sterb ich und bin tot

--Fischmob