Ruellit, I'm also in the process of adding 2 more monitors. I finally decided how I want to set it up.
I ordered the 2nd video card (Anton) listed on the Dream machine board yesterday (dual Analog outputs). I figured if it is good enough for the Terminator, it's good enough for me.
Also have the monitors picked out; will replace the existing one plus add two more; will install 3 19" crt's. Will buy one and see if I like it. If so, then I'll buy two more identical ones.
And I'll need to get a heavier duty desk to put the monitors on. Office Max is having a sale on their Office Pro furniture collection. (sale actually doesn't start officially 'til Sun.) Ordered one yesterday.