For some reasons Windows XP often seems to have a corrupt autoexec.nt; various peeps I have helped install the statswapper have reported this proplem.

If you do a google search on autoexce.nt there are a number of good explanations of how to remedy this proplem. Which you use depends on the exact proplem you have.

(autoexec.nt runs .bat files in 16 bit emulation mode I think)

Hope this helps..