Just out of curiosity - what video card are you using? How did you configure zoom player to go full screen to go to your big screen?
I'm running XP and two video cards, the primary monitor (monitor 1) is a mid-priced ATI Radeon card with passive/heatsink cooling, running 1,920 x 1,080 resolution, sitting in a PCI slot. As I do not play any 3D graphic games on the PC I do not need a video card with active (fan & motor) type cooling. I have an XBox and a WII that are fed to the projector via a remote control switchbox.
The secondary video card is an inexpensive (19 bucks at Frys) PCI slot card, running 800x600 to run the touchscreen (monitor 2)
I then configure XP to stretch the desktop across the two monitors and set Xlobby to run on monitor 2.
ZoomPlayer is configured to start in full screen on the primary desktop that feeds the projector.