Second monitor issue on bootcamp MBP, Windows 7

[Sems]

Hi

I'm running Windows 7 through bootcamp on a macbook pro. I've hooked up a second monitor but its ver very choppy to the point of being unusable. I was wondering if any one had any ideas of anything I can try to fix it. My system specs are below. Could this be a case of not having a good enough graphics card?

I'm using a Kensington Iniversal Multi-Display Adapter.


Windows 7 Ultimate 32 bit SP1
Macbook Pro 2.4mhz, 250 gb hardrive, 4 gb ram,

NVIDIA Graphics drivers version: 275.33
DirectX runtime version: 11.0
Graphics Clock: 450 Mhz
Processor clock: 950 Mhz
Total available graphics memory: 1403 mb
Dedicated video memory: 256 mb ddr2
System video memory: 64 mb
Shared system memory: 1083 mb

I do see there are similar posts out there but none of them have helped me. I have all the latest drivers as well.

I hope someone can help me please.

 

[Sems]

Futher details

Ok I've got it to the stage where the second screen is linked to the first but when I drag an open application to the second monitor as soon as I let go of the mouse button the content in the window blanks out and never comes back. Does anyone else have this problem?
The screenshot attached is of Firefox on the second monitor...

 

[Sems]

Further details - screenshot 2

Heres another screenshot that covers both screens...

 

[iJohnHenry]

In the absence of someone that knows anything, have you played with the screen resolution on both monitors?

 

[Sems]

Fixed

Thanks for your reply. I've figured it out. It was to do with applications using hardware graphics acceleration.
I had to disable that in each application that wasn't rendering correctly (Firefox, IE, Visual Studio). Once done they worked fine!