There are some topics already about playing JK/MotS under XP (and probably Vista as well)... I'd check there first. Since I don't have it, I can't say.
If there's a genuine incompatibility, contact LucasArts technical support and perhaps if enough people complain they'll release a patch. After all, they're still selling these games on Steam, and they patched "Outlaws" years ago for precisely this reason.