Hello Paul
CVI 6 was the only version that has been tested so far on XP, so we do support using this version on XP. But since the other versions were not tested, I cannot really say at this point what problems you might come across, since there were significant changes that were made in XP. And CVI 3.1 came out a long time before XP was released.
Here is the list of NI software that is supported on XP
http://digital.ni.com/express.nsf/bycode/winxp?opendocument〈=en&node=seminar_US
Thanks
Bilal Durrani
NI
Bilal Durrani
NI