Do a system restore to retrieve it; it can't get erased just like that.
Boot in safe boot and choose the option to do a system restore. If you manage to get your system back up, save the file on a diskette, and re-install your program and drivers.
Asus P4P800 SE
Intel P4 3.2 Gig 1024 Meg PC3200 cas latency 2.5
RAID 0 2-36.7 Gig SATA WD 10,000 RPM
200 Gig WD ATI ALL-IN-WONDER 9600XT
6500 Kb bandwith Internet Connection