Hi Bellerophon. Thanks for the quick reply. That's a shame!
I may re-install my Radeon HD 4670 card to replace the IG35 onboard graphics as the onboard surprisingly struggles with HD content under Windows 7 with noticeable stuttering. Under Vista it manages OK. With the Radeon card I have the option of component output to the plasma screen rather than VGA which might be a way of solving both problems at once. I see there are now Catalyst beta drivers
available for Windows 7.
I shall be posting a thread under the graphics section of the forum to try to find out why the Intel beta driver
appears to load the CPU more than the equivalent Vista driver (in Vista 32 bit setup). I can only assume that I am using less graphics hardware in Windows 7.