I cant get the full resolution in win7 i.e. 1440. This was not a problem with XP. Is there a d/l available?
Have you verified that both your monitor and graphics card is indeed compatible with Windows 7? The best resource to verify compatibility is available at the Microsoft Windows 7 Compatibility Center located at the following link: http://bit.ly/1gW6Ns
and can be used for both hardware and software concerns.
Also, if they are both indeed compatible, have you installed the appropriate drivers for the GPU?
Microsoft Windows Client Team