Whats that extra plug inlet on my monitor and video card
 

Whats that secondary monitor pin inlet (usually white) that is on my video card and monitor.. is it for dual screen?

Thats a DVI input/output. If you've got 2 on the graphics card then yes you should be able to use dual screen.

You have a monitor with a DVI connection, you should get a DVI cable and enjoy better picture quality and sharpness.

Nice, so do i use the blue and the white one together or just the white one?

Just the white, use the blue if you want to add a 2nd monitor.

Thanks, what if i want to add a second computer to the same monitor. I have a KVM switch but it isnt compatable with the white cord

holy crayolas batman, what a difference that made. plus i can switch between computers by a click of a button on the monitor, thanks :)

Does it really make a huge difference?
I just looked and my graphics card and monitor have DVI inputs so if it will make a big difference I'll pick one up.

Yah everything is more glossy. Time to watch some porn

should I have the screen refresh rate set at 60 hertz or 120 hertz?

Yep, with flat panels DVI is the way to go. :D

Check your monitor specs, it must have an optimum refresh rate. While you're at it, make sure you're running at native resolution.

resolution is 1600 x 1200 very sharp. ill check the manufactures website

it says 30-93.. http://www.samsung.com/Products/Moni.../NB21BSAS.asp# 120hertz is starting to hurt my eyes so I moved back to 60