Hyper-V and Display resolution

Hi there,

I am trying to increase the display resolution to 1600x1050 for my virual server (Hyper-v), but the max I can get is 1280x1024.

I installed the Integration services and all the updates for the host os (win 2008 Enterprise) and guest os (win 2003 R2 Enterprise).

any idea?

Thanks,

LOA