Well, I Hooked up my second Monitor today, and I think I should make it Multi-Monitor. Just so I don't feel weird moving my head to one of the monitors, typing on it, Which I am now. Thanks.
I know you said free, and hopefully someone will provide you with a good free one, but if you ever changed your mind and considered "paying" or maybe looking at naughty sites and getting it for free I would highly recommend "Ultramon". I had dual monitors for years, and I couldn't live without it so much that I paid for a copy! Link: Realtime Soft UltraMon