I found these files last Saturday they start with CA0A.IDX to CTUC.IDX. Then they go from SA00/IDX to STUC.IDX? I have managed to put them all in the Recycle Bin & left them all there.
I have checked my other programs Office, IE & Outlook Express and everything is working okay.
However I do not know what program has put these files into My Documents folder & therefore I do not know how stop this IDX file extension recurring again?