Your BIOS may have it's virus checker enabled. Access the BIOS and look for a Virus Detection entry like "Chip Away" or simply "Virus Detection" if it is enabled, disable it, save the settings and reboot. Then try the install again.
The above aside the majority of problems that I've encountered when installing XP have to do with flaky RAM. Many people purchased additional RAM when it was very cheap and while it worked well with Windows 98, XP is a lot more resource demanding. If you have more than 1 stick of RAM in your system try removing a stick and installing XP again. If you encounter errors then swap the RAM for another stick.
Harry Ohrn - MS MVP (Windows XP)
> I recently purchased Win Xp Pro, when it came to the
> installation process (after the preperation), i get a blue
> screed reading the following "A problem has been detected
> and Windows has been shut down to prevent damage to your
> system." it then asks me to check for viruses, to make
> sure the hard disk is confiqured, and that there is no
> corruption to the hard disk, but nothing is wrong, help!!!
> the error message ***STOP:0X0000007B