Dual monitors on FC3

[Gordon Charrick]

I've got a Matrox G400 (it has two VGA ports built-in) and just hooked a 
second monitor to the other VGA port. When I run system-config-display 
it gives me the option to enable the 2nd monitor, but when I restart X 
the other monitor just sits there stupidly like it's not getting a 
signal. Do I need any other software to do this or is Fedora set up to 
run it out of the box?