for C2D its better to but 965 chipset mobos.
since u want onboard gfx,then Asus P5B-VM.
http://www.tomshardware.com/2006/11/...os_for_core_2/
and if u dont wanna onboard gfx,then u can buy MSI P965 Neo-F.
remember that u'll get better performance with a P965 chipset than with a G965 chipset.