Compaq Presario 5WV296 + 2 Gfx Cards

I have just installed a 64mb gf2mx/400 pci into this machine to go with a 16mb tnt2 agp thats in it to get duel display. However, it boots up and I can have only the PCI card working and the AGP one "cannot start" (according to device manager).

In the BIOS, I can only give one of the VGA devices an IRQ. If I set the first to 3, and change the 2nd from disabled to 11 (for example), the first goes to "disabled" and vice versa.

Any ideas?

The full spec is:
Compaq Presario 5WV296 Desktop
AMD Athlon Thunderbird 1GHz
512Mb PC133
64Mb PCI GF2MX/400
onboard sound
2x proview 15" tft screens
aye, I've come to that conclusion now aswell after updating the BIOS with no solution.

However, I can easily change which display I want to use in the BIOS on boot, but I need both tbh :(

oh well, thx anyway