detect displays not working

I recently built my own pc. bought a copy of mac os x 10.5.2

installed it....great!!! i have an nvidia 8400 gs card with 512 ddr2

my syste works m is a gigabyte main board with dual pentium e2200 and 4gb ddr2 mem

both my monitors are connected but only the dvi output shows display.
mac doesn't even show my vga connected monitor any where.

thx for help,

Frustrated.

The moderator will probably delete this post. What you've done is illegal since OS X according to the license can not be installed on anything but a genuine Apple manufactured machine. Sorry, no help from this forum.

Regards.