Depending on how long ago you purchased your controller, there are
different ways to recover a dual-boot system. You can tell by seeing if
it boots into Windows XP. In that case, pressing ALT as the machine
boots up should bring you into a FirstWare menu. You can from there
choose Applications>>FirstWare Recovery. This will install your
controller as it was shipped from the factory. Then you can boot into
RT Safe Mode using the BIOS or the DIP switch and install software from
MAX. Then your system will still be dual-boot. Here is a great KB on
the subject:
http://digital.ni.com/public.nsf/websearch/227CF36870DB7BDB86256F790057F20F?OpenDocument
Richard
Field Sales Engineer, New Jersey
National Instruments