I'm a bit puzzled as to why you would want a board with built in VGA, you can buy a graphics card for about £15, not a great one certainly but more than adequate when compared to a lot of the onboard VGA. Anyway have a look at
this is PC index it will give you quite a few companies including Aria and Microdirect although it doesn't give you all their motherbaords but its a place to start. If you go back to the PC index home page you can specify which companies stuff you want to look at if you wish. You want to find a motherboard with vga in the description.