I think I remember reading somewhere that in order to use Microstudio on WinXP you have to upgrade to Microstudio 2.4
Yes,
Here it is
It originally asked about 2.312, but it states something about aspi drivers and it might be a similar/related problem, admin states in his post that: "To run under XP or 2000 requires Microstudio 2.400. "
Might be your problem. Good luck.
Flip (a.k.a. Mike)