My LCD Monitor is wigging out...

A couple months ago I bought a Hyundai L90D+ 19" LCD monitor. Everything was working beautifully until the other day, when it started wigging out.
All the dark areas on the screen turn to very thin vertical black and white stripes, and flicker and strobe a bit. All the bright (and average) areas of the screen remain fine.
I remember I was playing Trackmania Sunrise when it first started, but now it pops in and out at random.
Sometimes unplugging the DVI cable and plugging it back in helps. Or turning the monitor off and on. Or restarting. Sometimes it just goes away on its own.
I installed the latest Nvidia drivers. That didn't seem to help.

Could it be the monitor? My video card? Maybe the DVI cable? Surely it has nothing to do with temperature- I run 41C idle, 44-46C on a high load.
I'm using a dual monitor setup. I've got a 17" CRT next to the LCD...

WinXP Pro SP2
GeForce 6800 GT
Athlon 64 3500
ASUS A8N-SLI Deluxe
2Gb DDR400

Thanks in advance!

 

If your monitor came with a vga cables try them.

 

Put a little more distance between the CRT and the LCD.
Magnetism etc., isn't really beneficiary to any electronic device, which includes an LCD monitor as well.

 

Try right clicking on desktop, go to properties, go to settings, go to advanced, go to monitor, then properties again, then drivers, and update drivers. When my friend installed a new graphics card he had a similar problem and this fixed it... also try updating as my drivers as you can find and pray to the monitor gods.

 

also is it possible to have two different size monitors?

 

"Try right clicking on desktop, go to properties, go to settings, go to advanced, go to monitor, then properties again, then drivers, and update drivers. When my friend installed a new graphics card he had a similar problem and this fixed it... also try updating as my drivers as you can find and pray to the monitor gods."

Ok, tried this. It says there aren't any better drivers than the ones I have.
I've turned up the fans in my case and since then, all has been well. Maybe my video card just needed to chill out a little.
Thanks for your ideas, everyone!

 

Ok, it's still a problem. Dang.

"also is it possible to have two different size monitors?"

Yeah, it's a little tricky moving the mouse between them, but yes. (Course, maybe that's the problem!)

"If your monitor came with a vga cables try them."

Ok, for whatever reason, when I plug in the VGA cables, it says "No Signal" and the menu on the monitor won't open. I can see what input the monitor is selecting with the Imagetune software it comes with (watching on my other monitor of course)- it switches from Digital In to Analog In when I switch from DVI to VGA.
Well, here's something interesting- when I unplug the monitor from the computer, it still looks glitchy, so it must be the monitor. Excellent, I've pinpointed the problem. Now, is there any way to remedy it?

 

Have it repaired.

Different sizes monitors definetily isn't your problem, I run dual head with my laptops 15.4" TFT and an 18.1" TFT, never had problems.

Seems to me that your monitor is crapping out on you, so the best thing is to get it repaired while it's still under warranty.