First thing is you cannot import KMA files from the Import HHD. To put them back in the Database You have to Rebuild the database pointing it to the folder those files are in.
I find it very hard to believe that Vista moved/copied all those KMA files from the internal drive to the external without you telling it to either highlighting them all or by moving the entire folder.
I still do not know what picture file you moved. Is this the file you use for your Intermission screen or what? What kind of file is it?
Moving the files back to your internal drive does not put them into WMP. KMA files will play in Media Player but won't show the display anyway. Do you know what folder those KMA files are in? If they are on the internal drive they should be in C:\MTU\KMA Files. They should not be under the Program Files or Documents and Settings area.
You do need to do the items listed at this link to make sure Vista isn't hiding or messing with your files as well as to update your computer to current updates:
http://www.mtu.com/upgrades/hoster/v...de-hoster4.htm