Thanks for all the advice

and apologies for not replying sooner but I’ve spent the last few days trying to get rid of Haptime.A – a potentially nasty virus which the link supplied by Paper Tiger (great link Ta!) informed me that it can destroy all .exe files!
Unfortunately, the fix was only temporary. Despite the checker congratulating me on a ‘clean’ machine after fixing, the XXXXXXX virus reappeared as soon as I clicked on ‘My Computer’. Oh well, I’d been thinking of re-formatting C drive for some time and it wasn’t quite as painful as I thought it might be! The only program/CD I can’t find is the one I need to return all my backed-up data!!!!

Oh, by the way, I couldn't find out which file it was trying to open, it just came up with the message I mentioned in my first post.
[ 20 August 2001: Message edited by: BALOO ]