Unfortunately, you will not be able to compile the drivers with the kernel sources shipped with RedHat.
If you checked "kernel development" when you installed your RedHat, you should be fine. You can simply verify that kernel-source is installed by typing:
rpm -q kernel-source
If it is not installed, go to http://www.rpmfind.net and look for kernel-source and download the package that exactly matches your kernel version (uname -r gives you this information. For your reference,I am running kernel-2.4.18-18.8.0)
As root ,do this:
rpm -ivh kernel-source-2.4.18-18.8.0.i386.rpm (or whatever version you are about to install)
Now go to http://qce-ga.sourceforge.net and download Nikolas' latest
driver (qce-ga-0.40c.tar.gz by the time I wrote this)
tar -zxf qce-ga-0.40c.tar.gz
replace the line LINUX_DIR = /usr/src/linux with
LINUX_DIR = /usr/src/linux-2.4.18-18.8.0 (matching your kernel version)
(you'll see a bunch of data rolling, hopefully ending without any
(bunch of data rolling again)
and Presto! Most likely, your camera will be named /dev/video0. Just launch your gnomemeeting and have fun!