No, there must be a way, though I don't know it.
Is there an option to run AGP (or what you have, maybe PCI-E) Acceleration in that case? That you can modify to make it see this first? Instead of the onboard chip?
Like selecting 'AGP Acceleration : Enabled?
or 'Initiate Display First' and select AGP, or PCI-E instead of onboard
I'm just gripping on straws now... but I hope there is an option for one of these.