I have a quote from a computer store (Central Computers) and would like to be sure that there would be no unexpected compatibility problems with Linux.
They will not be installing the OS, I will, likely Xubuntu 10.4.
One area of concern is that I want to be able to drive two monitors simultaneously, one of them HD1080 using VDPAU for H.264.
I selected a video board on the list for feature set C. Otherwise video demands are just X windows. Here is the list: