ASI windows SDK download:
http://www.zwoptical.com/Eng/Software/index.asp
FC2.3beta support ASI with the native SDK mode
new features:
free ROI selection via mouse drag in the preview
16bit output and bin2 support for the ASI120MM
Y800 RAM output support for ASI120MC
http://firecapture.wonderplanets.de/betas.html