Fatal Exception Error at…

I have a PC PIII 1.13 GHz, 128 MB RAM, 40 GB HDD, Intel Based Chipset Motherboard and ATX Cabinet, Dual Booting with Windows 98 and XP, I have a blue screen of death in windows 98 several times with the messahe A Fatal Exception 0D occur at 0028:c02402f1/f6 VXD VMMC0ej + 000012f1/f6 .. and in Woindows XP it simply hangup.

any suggestion for troubleshooting?