I think I have now worked out what my problem is....I have been having this problem for approx 18months now, ever since I upgraded the RAM, mainboard & CPU. At this time I upgraded to an AMD K6-2 400. Originally the fatal errors only occured very occaisonally (sorry about the bad english there!). Anyway through time it has gotten steadily worse & I now realise the heat-sink has quite a lot of dust in it. Reading another post on the Win98/ME (i think) forum, something like 179 people have written in all complaining of the same problem & the same error....all of them using an AMD CPU. Apparently it is a fault between the CPU & windows, so a patch is available from microsoft....However, I am not trusting that..I am going out to get me a PIII or P4. I use two of these at work & my laptop is a PIII. They never error, so I am not trusting anything else.....