Thanks everyone for the suggestions made yesterday - so were more useful as others ;)
Shelley : Yes, a BLT without Bacon, Lettuce and Tomato is no longer a BLT. But I didn't have lettuce, the bacon wasn't cut the right way and I could replace the tomato with tunafish. But if I had put an option to make a T sandwich, no one would have understood it.
Ash : Yeah! Smoske is indeed correct, but with the ingredients I had, not possible. I would have added chicken, lettuce, tomato, mayonnaise, carrots and possibly some egg to it. Depending on what type of smoske I'd be making of course :)
Yesterday the owner of the faulty computer finally got me the Windows ME CD's that I needed - at 22h00 or something like that. So today I'm finishing up the job at hand : just did a backup of Outlook Express, and formatted the drive. Now the windows ME setup is doing what it is supposed to do - I hope. I've already noticed that windows ME is unable to detect the Windows 2000 partition that I created, wich is definitely a benefit in this case. That way I shouldn't worry too much about them messing that stable OS up. Besides, should the be able to boot into it, it's protected with a rather strong password. That leaves me the possibility to boot into windows 2000 whenever needed and take a look at the windows ME partition, and do backups if needed.
I think I'll be doing a setup like that for all computers that come in for a checkup - especially if I know the owners like to mess around with it, or don't know "delete" from "insert".