Well, I decided to delete those old emails, and try the scan again. By the way, I tried the Trend Micro scan, and it did not produce a virus. I know definitely there was a bad file, however - the name of the file which was (The issues associated with this configuration.(fwd)\those.exe) were signs it was a virus - but I couldn't move it or delete it. So I deleted the files, and found a second back up file in the computer I made some time ago, deleted it also, and scanned the Windows and it seems to be OK now. Thanks for your good advice!