With that kernel, I would attempt to compile Xfree86. It's not a kernel issue, but a userland(XF86) issue. www.xfree86.org.
With redhat linux you can recompile the src rpms by doing: rpm --rebuild *.src.rpm. www.rpmfind.net
for the newest version. Install the compiled binaries, reboot, and set your display. Your card and monitor are well supported.