i have this problem where when anything move across the screen horizontally
(dragging a window, picture, looking left to right in a game, etc) there are
these jittery lines that run across the screen all the way from left side
to right. i took these steps to remedy the situation and none have done a thing.

-download and install drivers for my x850 ati card.

-replace monitor.

-try white dvi cable

-try blue vga cable

-replace entire computer, and keyboard, and mouse
(dell sent me a new one cause mine is only a month old).

i have a gen4 dell xps, 3.7 p4 1066 fsb processor, ati x850,
2 gigs of ram, raptor 74g Hdrive, and a 400g Hdrive i forgot what kind.

is my freaking house haunted? has anyone heard of this problem?
im desperate for help, im a game designer/level editor so this
"small" problem is actually quite big. please help me, sombody, anybody.

I've never seen this problem but in the interests of gatherin more info, what type and model of monitor are you using, what is the resolution set to and the refresh rate??

1. Are there any lighting sources close to the monitor? Reason asking is I have seen where a flourescent light caused the flutter on a monitor...turn off the light the flutter stops...turn it back on the flutter starts.

2. Does the workstation sit beside the Monitor? I have also seen where the hardware is setup close together and the PC caused a flutter. Moved the PC further away from the Monitor and the flutter went away.

3. Do you have any major power lines running in the ceiling or under the floor close to the workstation? This also will cause interference and a flutter.