1. all drivers that comes from Microsoft Update are stored in the C:\Windows\SoftwareDistribution\Download folder. The cabs will have names like 0efa3f8a313c5a295e23db431e3a2461e481d1b0, and you have to add the .cab extensions and use WinRAR to extract them.
Don't use the built-on extractor in Windows since it breaks paths
2. Yes I mean the hardware id in the details, or just search for Authentec <whatever model> on Microsoft update
/ Johan