Upgraded to XP - Now 2.315 will not work

[Flipeoke]

I've recently upgraded to WinXP and now Microstudio will not work...I reinstalled Microstudio, have updated my ASPI, among a few other things, so far I have gone from getting an error message which would pop up instantly when the drive began to write, saying failed to write to device, or something like that, to the computer hanging up when it started writing, to now the drives are not showing up at all in Microstudio. I have a Plextor PX-W4024A. What else am I missing...it worked flawlessly before the upgrade...