SUWin errors and others

I'm getting very frustrated. I have/had a DFI K6BV3+ w/ AMD K6-2-450Mhz Processor. 1 4.3GB Western Digital, 1 8.4 Samsung, and 1 2.5 GB Western Digital. Three sticks of memory 2 64MB and 1 32MB all are 100Mhz. Last but not least I have a Diamond S770 AGP Video card.
About a month ago I received an e-mail asking me to go to some porno site. Shortly after deleting the e-mail my entire system started crashing. I fdisked and formated the 4.3GB hard drive and tried to reinstall Win98 (the original upgrade) (I bought it the first day it was on the shelf). I now get SUWIN errors everytime it tries to copy the files needed for installation. I have hooked a new hard drive in to no avail and have replaced the mother board. I have also switched all the sticks of memory out at one time or another. The only two things I have not tried yet were a "Master Boot Record" format (because I do not remember how) and to switch out the processor.
The questions here are:
What the h$%$ is a SUWIN error? What does it mean?
How do I do a MBR format?
Any ideas on what to do?
Thank you

To re-write the master boot record boot from a floppy containing fdisk and at the command line type fdisk /mbr this just re-writes the master boot record and nothing else.

SUWIN errors are most commonly Bad RAM or Faulty processor.
Start with the RAM first, remove one stick at a time.

Try clearing cmos as well.

------------------

hello.
boot your pc with a good antivirus disk set, such as nortons 2000,there are other really good ones as well, you may have a boot sector virus, if you have a really nasty one, it can get into your cmos as well,and transfer to every h.d.d you have in the machine, not to mention floppy's.
try the anti virus disks first, if all is clear, then mbr it, fdisk it, format it, and reinstall. if it still won't go, i suspect either improper voltage to the cpu, poor cpu cooling, or bad ram.