Windows not allowing me to setup Dual Screens

Go to display properties in windows by right clicking on the destop...
Click on the 2nd monitor, then make sure to check the check box that says to "extend my desktop onto this monitor"

That should do it. I don't have a Nvidia card or else I'd help with there drivers. BTW, if you are running SLI with the current generation of cards (like the 8800gt) dual monitors will not work.

What happens when you click identify monitors?
(Do they both say 1?)

Oh yeah, what OS are you using?

Could you clarify what it is doing? When you say it just clones and stretches do you mean that the "stretching" is just because you bought a larger monitor?

I had a similar problem, if you bought a WS monitor it might be easier to boot up with only it connected, then plug in your original monitor and see if you can enable the extended desktop option from there. I made a post here a problem with my ATI300 card not being able to use the native 1680 x 1220 resolution when both my WS and standard monitor was plugged in. I was able to get it to work by trying the WS monitor w/o the other connected.

It never hurts to reboot and try again

And if all else fails, try updating the drivers.

Does your Windows Task bar stretch across both monitors, or is it only on one? What resolution does it say your monitor is running at?

I no longer have any xp machines at home although the situation I referred to above involved xp pro.

Hey, sorry I couldn't be of more help. Maybe it's got to do with SP3 or something.

Hopefully someone here can help you resolve this. I'm off to do some Sunday yard work.

Cheers

Did you download and install the latest video card drivers from nvidia?
when you look at the 1 monitor in display properties what is the resolution?
Try this:
right click the desktop
select nvidia control panel
find advanced settings
setup multiple displays
does it show a dualview option? if so check it. also make sure you select different monitors in the drop down boxes