I know it is possible. My brother wrote a tutorial on it. It doesn't
cover the usage of vid cards with multiple video inputs, but it tells
you the gist of it. Do a google for "multiple monitors linux" and
you'll get a few tutorials.
Link to article
Sorry about mailing the reply directly to you, Gmail won't do mailing lists well.
"If practice makes perfect, and no one is perfect, then why practice?"