What can I do to fix my “new” screen?

I recently bought a Viewsonic VA800 at a high school fundraiser. The seller swore that it worked. When I plug it in to my computer, the picture goes crazy from the start. The screen resembles an old scrambled cable channel. The menu from the monitor is fine until the desktop loads, so I suspect it is some sort of compatibility issue. The display adapter is a built-in NVIDIA GeForce 6150 LE. My old monitor is a NEC MultiSync E500.

need some names of pcs,a gud display adapter?

basically i'm copying a project from a friend about computerizing a student management system.(making it from manual to database)
i need help with the hardware required.i have to change it a bit so its not obvious i'm copying here is wat he's written:

A 3.5" GENERIC NEC FLOPPY DISK DRIVE

HITACHI DVD-ROM GD-7500 to install necessary software
An NVIDIA RIVA TNT 2 Ultra Display to act as an adapter to act as an interface with the monitor.

just try and replace them with something acceptable

also need reasons as 2 y this hardware is necessary in the context of the solution

The settings in my Display Properties?

HI! you know when u would right click on desktop>properties>
and when i click on my settings tab...
at the bottom, where it shows the drop down for
"display"

for some reason, my computer is seeing 2 display's
__________________________________________
1.) NEC Multisync XV17+ on Nvidia GeForceMX 440 with AGP8X

2.) Default Monitor on Nvidia GeForceMX 440 with AGP8X

now why is it seeing two displays for???

gee i dont get it...

no wonder why my screensaver would go off the screen

becasue this is why!!

so what should i do

tell me what u think about it

this is after when i install my
"Nvidia WIndows XP/2000 display drivers"

see before i installed my display driver..it showed only one

display

now AFTER when i installed my NVIDIA Display Driver

it see's two displays

:(

u kind of get what im trying to say???

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.