Is there any one out there who knows how to set up Dual monitors to display one movie?

How do I optimize my system for a dual monitor movie set-up?
I mean one picture spanning accross the two. I am running
System:
windows xp pro 2002 servise pack 2
Computer:
AMD athlon 64x2dual core procesor 4400+
2.21 ghz 4.0 gb ram
Video card:
NVIDIA GeForce 7800 gt
Motherboard
:A8N-SLI Premium
Hard drive:
WD SATA Raptor 74gb 10,000 rpm
Dual Monitors: Nec lcd 1512 15" and cm2015 lcd Balance 15" monitor.
If that helps. Oh, and yes I downloaded all the latest drivers. Even flashed my bios!
could it be a monitor brand incompatibility issue? if so where could I swap my two 15"s for one 30" (lol) would anyone buy these on ebay? the two work fine multitasking tho.

Does the intel extreme graphics 2 support dual monitor display ?

I have a NEC with an intergrated intel extreme graphics 2 with a Intel(R) 82865G Graphics Controller can it support dual monitor display like a extended desktop whereby you can drag some stuff to the other monitor. Working on 2 monitors but really on one big work area.