Okay. I just found out that VfW isn't supported by Vista . Since a lot of my source video are made with Lagarith, how can I get them to play and use in a video editor?
Okay I followed the instructions. I turned off UAC and rebooted. I ran command prompt as administrator. And then when I ran rundll32.exe setupapi.dll,InstallHinfSection DefaultInstall 0 "d:\lagarith\lagarith.inf" Vista returned me an error popup saying "Installation failed"