Windows 2000 will not work with GigaStudio. As of now, we don\'t know when XP will work with Gigastudio either.
I would guess that you don\'t need anything more than XP Home. XP Professional has extra features related to supporting multiple processors and other business related stuff, but I would guess that Gigastudio doesn\'t need any of that. So unless you have a dual-processor machine you are probably fine with XP Home. That is, if Tascam does actually release a version that works with XP.