Thanks, Michael. I have an older Intuos 4 pen, and one can buy newer ones from Intuos. But how to you get your system to see the pen? Do you have to use Intuos drivers? The Surface pen is bluetooth, which is nice, but might not have the sensitivity/pressure levels of Intuos models. Something like what you are doing looks like an attractive solution / less expensive alternative to a $2K Cintiq with even more resolution (on the external monitor).
Digital Photography Links, D3/D300/D3x/D700 Reviews and Info: http://www.psyche.com/psyche/links/miscellaneous2.html#D3_D300