Sorry Major Microsoft has already built into Windows XP
the performance enhancing ability of bootvis and it runs at predetermined times. It was intended for program developers
to detect any performance or boot issues at startup.
You should go to Start, Run, type msconfig, then click on the
Services tab at top and uncheck the (Background Intelligent Transfer) service.
Also go to the startup tab and make sure there are no
programs that are not needed that have a check box to
run at startup.