Budget?
A company that we work with have an entirely portable rig that is so simple that it is sick. Sonic Foundry makes the hardware/software package called Mediasite ML440, or something like that. It is basically a stripped down PC in a hard case. it sits titled and one side is a LCD screen. It has a capture card and all you have to do is hook up your camera, plug it in to a broadband connection, and go.
The reason I ask about the budget is that I think that it runs about $15k without a camera. It really is a plug-and-play set up if you have your host already set up though.