...after a while she would get a message saying that the computer needs to reboot itself and it would start a countdown during which we were able to remain in contact. Then her computer would reboot.
Ahh... the dreaded "countdown" sounds like the
Blaster worm. There are so many threads here on that subject, it's hard to pick one for starters, so I will paraphrase myself from an earlier post:
That's probably the MS Blaster worm in action. It used the useless open service
RPC on XP to install itself and do its dirty deeds. You will have to take several steps to fix it.
1. Go to
Symantec and download-and-run the latest version of
FixBlast, a free stand-alone tool to remove this worm.
2. Go to the
Gibson Research website. Download-and-run the program
Shoot the Messenger. There are other tools there, also.
Note: both these tools will fit on one floppy, so you can download them at a friend's house or computer store.
3. Make sure that all her XP patches are up-to-date.
4. Come back here and do a search on "Blaster" for more details.
5. She will likely also have to delete her
System Restore files, as those have probably also been infected.