using unnatend.txt to deploy win2k pro

I’m creating an unnatend.txt file to automate the upgrade of several win9x boxes. I’ve run the upgrade on a test machine and everything is fine except for a warning regarding Direct X 8.0 during the compatibility check (at the begining of the upgrade). The warning is not a problem, I can click ok and the rest of the installation is automated, but having to click ok defeats the purpose of automating the install.

I can not figure out how to tell the install to ignore this compatibility warning. Does anyone know how to do this? Thanks.