I did notice that VirtualDub added an option to capture from the screen a while ago. I've never tried it so I can't say how well it works.
There are other programs available that are purely screen capture utilities, but the only two I know of - Camtasia and HyperCam - are both payware. Maybe Google could find you a free alternative.
Another pay option is Tunebite Platinum, which appears to be a capture program designed specifically for DRM removal.