This card is currently available from Adirondack Video Astronomy . The program places the card in 640x480 black and white mode and allows capture as a video stream until memory has been filled or captures and examines each field for contrast as quickly as the computer can keep up. The program is free.
Source code is included.
Because I like writing programs. Because while it works, others out there could improve upon it. I wrote it to make my own work easier and improve my results and believe others could benefit from it too. AstroStack is Freeware. . . It operates in Windows and delivers amazing results at up to 1500 x 1145.