Courtsey of Mitch411 from the Adobe forums:
Download GraphEdit from Videohelp Tools or from anyplace else on the web that you prefer.
Once you’ve downloaded and installed (should take about 10 seconds), open GraphEdit and choose Graph > Insert Filters. Scroll down to a listing for “Video Capture Sources” and expand it to see what’s there. If you’ve got anything other than Microsoft DV camera and VCR, then expand that entry to see the location and name of the file. Navigate to that location and rename it’s file extension to .old. Now try capturing in PPro 2.0.