I have a nvidia mx420 in the pci slot, and a mx440 in the agp slot. How can I run these for dual monitors? I can not get it to work. The agp video card gets turned off when the pci is plugged in. any help? also is it possible to get the onboard video card working with this setup?

Usually when you try to run two video cards for dual monitors you will need to make the PCI video card as the card for the system to boot from.. To do this go into the BIOS at the start and in there will be the option of which card to boot from at start up. Make sure it is set to PCI as initial display. This should allow both cards to work. After windows starts to boot up it will start off on the monitor connected to the pci card first,and then when it is booted it should move over to the monitor connected to the agp card. So if you have 2 different size monitors connect the better one to the agp video card as this will become your primary display under windows and be the main monitor. Also you will most likely then be asked if you would like to enable n-view since they are nvidia cards. Just follow the setup and all should be good...