Is there somewhere I can download Quicktime Capture drivers. I am running Premiere 6 on a PC with a Matrox RT2500 Capture Card, but am unable to access Quictime Capture drivers.

My main motivation for doing this is so I can capture at 320x240 for Windows Multimedia, but I am unable to alter the Matrox capture settings from their DV NTSC 720x480 presets.