well im guna go on a limb and see if the info wont help ya, I take it by a CAD program you meen something about autocad. First off if your looking to to do much visual basic types of things (autocad exe) win xp isnt a good choise for you, corp. america CAD companies and personal uysers should stick to Win Me, about the only thing it douse realy well is run autocad programs. in ether words xp and CAD progs dont play nice, try and reinstall if nogo. your going to need to think about Win Me or finding a compatible CAD Xp program...... and you can check on
www.support.microsoft.com and see if its compatible with XP