Howard, thanks for the help. My BSOD has resolved itself - Windows claims it was due to a display driver. Anyway, I've downloaded the latest and greatest McAfee suite and it is preventing a buffer overflow that was initiating the system shutdown. I'm still working to remove what I think may be Blaster, which is causing the buffer overflow issue. Oddly enough, my yearly sub to McAfee has expired just within the last few days - just about the time all this started happening.
Also, I discovered that my Windows Automatic Updates was also disabled.
And, while this was all going on, Windows started telling me that I was the victim of software counterfeiting, and that my copy of WinXP was fake. How interesting, since it came pre-installed, directly from Dell.
Now, however, I'm unable to access nearly anything but Google.com. Any attempt to access nearly anything else results in McAfee telling me that it is an unsafe site (the address bar displays something about localhost). This happens in both IE and FireFox. I've downloaded MVPS HOSTs file (on another PC) and will follow it's directions for replacing what I assume is my hosed HOSTs file, with the MVPS secure HOSTs file.
Thanks again, Howard, for having a look at my HJT log.
Tim
P.S. One more thing - I disabled System Restore, as directed. I'm thinking I should probably wait until my system is clean, before I re-enable it?