"Check in" command in Visual Studio

[Madguy]

I've had a lot of success automating the various parts of my project using Visual Build, but there's one that I'm a bit stumped on. Normally in Visual Studio 2005, I need to right-click on something in Solution Explorer and click 'Check In'. I haven't been able to figure out a way of reproducing this step in Visual Build. Any help on this would be greatly appreciated.

Thanks,
Matt