Thanks for the various suggestions. I did try the other flash drives on the Win98se machine. Only the one from Kingston worked and it was from Kingston that I was able to get the Win98se driver. Checked on the XP machine and all the flash drives were using the same driver. I am decidedly wary of taking .sys files from the XP machine and putting them into the 98se machine, particularly as Mark said there wasn't a generic driver for flash drives in Win98se. The non-Kingston flash drives don't identify themselves, either on the case or when you do "properties" when they are plugged in. Incidentally what do you call these drives? Is there a generally accepted term yet? Regards Tony Tony Beckett - Rutland, UK The NOSPIN Group is now offering Free PC Tech support at our newest website: http://freepctech.com