Well, the Yaha worm really fouled up a lot of things on the PC, as you've probably already read. Here's the rest of the story:
A friend came over and helped me out. Actually, he didn't help me, it was like me helping him, a little anyway. He copied some information off my harddrive, what had not already been ruined and what was clean. Then it was format the harddrive.
After that, he loaded Windows XP Pro and updated the drivers. The computer is back up and running. I will have to reinstall lots of the programs that I was previously using.
I really appreciate all the responses, they have helped me to learn.
Thanks,
Dave