Labview 7 Express and MS Antispyware

For some reason, whenever MS Antispyware starts an
scheduled scan it first tries to re-install the LabView 7
Express run-time engine. That means that if I am not
there to stop the installation manually and the CD isn't
in the drive, the scan won't run until I stop the
installation (which usually has to be done 5 or 6 times
before the scan will start). That is usually the next
morning, as I am usually not up when the scan is
scheduled. This has happened, without fail, every day
since I first installed Antispyware just after it came
out. The whole point of using MS Antispywere software
for me is to run the scan while I sleep, but it won't do
it. I can't keep the CD in the drive all the time, I
need the drive for other CD's. Stopping the installation
does not interfere with the functioning of LabView. I am
running windows XP SP2.