Selecting video memory

[Pminerbrowser]

I am running an OEM version of permedia labs Fire GL 1000 pro on an
old dell machine.  In Redhat, I would be asked how much memory my
video card had (8 megs).  In Fedora core 3, there was no way to
configure this that I could find, so I reinstalled redhat 9 and then
upgraded.  The 8 megs carried over.  Now I am on core 5, and having
the same problem.

Is there some way to manually configure the driver to understand that
there are 8 megs there?

Thanks,
Yoshi