Problems uninstalling FSX properly.

Hi all,I'm having problems with FSX (Namely I can't install FSUIPC, the Level D 767 is giving me the dreaded panel initialization error and I can't get Active Sky X to work over the network) I've re-installed 3 times now, each time doing the best I can to get rid of all the associated files and registry entries, but I keep coming up against the same errors when re-installing.Is there a tool I can use to clean FSX stuff specifically? Or a guide I can look at to ascertain where I've got something I'm not finding lurking?(Been away from FS for over a year now, and can remember why I got fed up with it all!)Cheers,Gareth