Windows 2000 Pro SP4,  no name PC with Intel P4 1.5GHz processor.

I am having the toughest TIME with the this code.  I was downloading a .rar file;  I scanned it for viruses, then tried to open it.  Immediately, my SCREEN went black and then to the "blue screen of death".  It had this code:
0x00000050 (0xFFFFFFC2, 0X00000000, 0XBFF370CB, 0X000000)  PAGE_FAULT_IN_NONPAGED_AREA
***Address   BFF370CB  BASE AT BFF2A000, DateStamp 41f77dd3   -   pxfsf.sys

I am not that literate with crashed computers, but I think this means something bad.      I cannot get into safe mode at all.  It gives me the same message.  I tried to start it with a boot disk, but the same message.  I am at a loss.  Besides reformatting, does anyone know what my options are?

Also,  If I can find a way to back up my files, I don't mind reformatting.  

Thanks in advance.Windows 2000 Stop Messages

I would run MemTest86 overnight to see if there are any errors being REPORTED, after re-seating the RAM module(s). The simple process of re-seating the RAM modules alone often cures these problems.

Then run the drive manufacturer's drive diagnostic diskette to see what that reports, as it might be time to get a new drive. (My last drive failed after four years.)

Or, TRY burning a KNOPPIX CD. Knoppix is an operating system which will run from the CD-Rom drive without installing it to the hard-drive.

You can then use the built in burning program K3B to burn all of your data to removable media.

(Don't rely on CD-RWs, btw.)I didn't have any other programs open except IE 6.0.  Can I pull the hd out of the computer and ghost it on another machine?  (that's if the ram re-install doesn't work.  BTW, I have 256 installed on the machine. Also, I am worried about a virus that might be causing this.  I opened a .rar file and it immediately went to "Death Screen".  Could that be a possible virus?  

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would run MemTest86 overnight to see if there are any errors being reported, after re-seating the RAM module(s). The simple process of re-seating the RAM modules alone often cures these problems.

I didn't have any other programs open except IE 6.0.

Can I pull the hd out of the computer and ghost it on another machine?  (that's if the ram re-install doesn't work).  BTW, I have 256MB installed on the machine.

Also, I am worried about a virus that might be causing this.  I opened a .rar file and it immediately went to "Death Screen".  Could that be a possible virus?  

I re-installed the memory and it still keeps me on "death screen"  I am running Mem Test 86 as I write.  Will go to bed and see what it tells me in the morning.

I checked on the Knoppix and there is a lot to download. Said it would take 5 days...LOL   Are there specific files to download so I can try to boot from my cd rom?