How could I view a webcam locally over a network

[DaJe]

I would like to access and view a USB camera plugged into one computer, from another computer. How could I do this?

[Omega]

Maybe a Hamachi network? Or a networked webcam?

You could also VNC, but that's a bit excessive (but it's free and works if everything's set up right)

[DaJe]

I could get a Linksys webcam that could be viewed over my network easily, but I'd rather use the camera I already have. I think I could use something like VLC or Windows Media Encoder to do it, but I'm not sure how to broadcast it right and how to connect to it.

[nil8]

You have a few options.
As strange as it seems, the input can be broadcast though a media server, such as VLC or Winamp's shoutcast.

Another option that's more secure and robust is web based camera viewing that requires authentication.

Another option still(and I don't recommend this) is finding some method of remotely viewing the desktop like VNC or RDP.
The reason this is a bad idea is because directshow filters don't work well with these and can cause YUV issues inside the codecs that the camera uses to encode video. You could be staring at a black box instead of a live feed and screwing up the encoding process at the same time.

As for specific pieces of software, it helps to know what kind of camera and the software you have installed for it. Also mention your OS please. No reason to deal with Windows programs if you're on a linux box.