If you have the Leutron capture card for the Sidexis oral cam, don't bother use it on Win 7. Leutron went out of business. No Win7 x32/x64 drivers. Sidexis XG 1.2 (yr 2004) won't work on Win7 but works if you run it in on Virtual XP mode.
Where is the software Sidexis for download?
Unfortunately, we can't help you resolve your issue as this program can be only obtained with certain hardware.