My upgrade to Windows 7 went very smoothly and I didn't really run into any problems. However I have just set up my extended monitors [I have two monitors on one PC] by main monitor is perfectly okay, but the second monitor is not displaying properly. It is a 23 inch flat screen and I suppose there is about a 3 1/2 inch gap either side of the page. I thought I may be able to change the resolution on that one monitor but it is showing the one that my main monitor is on, and some other resolutions that are actually smaller so they wouldn't be any good, the rest of them all grayed out. Any ideas?

have you fixed this? if not, right click, adjust resolution. (you shouldnt have to detect if it is workng already) make sure 1 and 2 are exactly the same size.

Yep all fixd