Windows 7 - Mouse get locks into extended monitor screen when WMC is in full scree

Looking for some help with this issue, It just started happening and I am not sure what has changed. It didnt do this before.
I am running windows MC on an extended screen from my PC. When I set WMC to full screen I can no longer get my mouse back to my main dsiplay screen. If I take wmc to a pane all works fine, but this is annoying for many reasons. Also when I set my resolution for my extened monitor (Samsung 50" Plasma TV) it keeps changing back to a resolution that is not correct for the screen. I have tried about everything I can think of will no avail.
Any help would be appreciated.
Thanks
Eric

It is normal. Nothing 'happened' to cause it.
Press the Windows key on the keyboard to escape.

Wow,
Thank you very much.
That was the easiest fix i have done yet, wish they were all that easy

Thanks Again