I recently bought a Hauppauge PVR-150 MCE for Vista analog video capture/TV tuner card for my Vista Premium PC. However Vegas Studio will NOT allow me to capture from it via the composite video and sound ports.
It sees the card in the video device list, but iti won't let me preview or capture from it.
S-Video would give a better picture, but the capturing procedure should be no different save for clicking a box to tell it to use S-Video instead of composite. Audio routing is identical either way.
Check out the download section of Hauppauge's website. Back when i had a WinTV card i had to download the capture application and new drivers because the software that shipped with the card was useless.