I plugged in my old c2d machine with a GMA4500 in it, and lo and behold, all the resolutions for the moniter I use, when connected by the VGA cable are there. The 1680x1050 doesnt work for some reason, moniter says invalid input but the others work that are around this resolution (1600x1200 and similar).
When I uninstall the Intel HD drivers, and just use the windows VGA drivers, they work with exporting the image to 1600x1200 (still dont have my 1650x1050 but close enough). I guess this is an issue with the intel drivers...I hope intel can work on this and issue a fix for the vga to external monitor. It seems the last update to the drivers was september last year or so?
Also, HDMI when plugged into a 1080p tv works fine...so I guess its something to do with the VGA...
This is a link to a proposed solution from Intel. Unfortunately for me this doesnt work with my VGA cable and AL2223W moniter. Still only have two low resolutions to use.