Came across this thread when I had a similar problem on my Dell Latitude D520. It has the Mobile Intel 945gm graphics chipset. Anyway, I downloaded a registry patch from the Intel driver site at...
http://www.intel.com...b/CS-003927.htm
...to remove the right click desktop context menu for graphic options and that seems to have fixed it (he says crossing everything that is physically possible to cross and some things that really shouldn't be crossed at all).