Thanks Guys! You've all been a big help on this one.

The final solution - save the data, wipe the drive and reformat, install
fresh copy of Windows SP, re-install all program software.

This is a major PITA, but seems the only completely reasonable and
reliable way to go.

Thanks to all who chimed in.

Regards,

John Rodgers
88 GL Driver,"Jerky PC" operator.

John Rodgers wrote:
> I;m having a problem with my PC. Hope someone can help.
>
> Cursor moves spasmodically across the screen. Jerkily, that is. I have
> cursor  controls set to the highest speed now, No difference.
>
> Audio files played on the computer often stall, stop and repeat, as well
> as the audio in video files, all when played on the computer.
>
> Captured videos are also  choppy, and the audio is choppy. when played
> on both the computer and my Phillips  DVD/CD player
>
> I note that something on my computer is drawing up to 100% on the CPU at
> times even when the machine is at idle. This totally mystifies me. Any
> ideas?? Obviously something is running and I can't find what.
>
> Thank,
>
> Regards,
>
> John Rodgers
> 88 GL Driver
> Chelsea, AL
>
>