The intel drivers require the kernel headers and the kernel source installed in order to build the drivers. Look in your package manager program, whatever CentOS uses, for 'kernel-headers' and 'kernel-source' or something like it.
I assume that CentOS 5 that you're using is the latest version, so do not install the ieee80211 package that the intel driver's readme recommends. The ieee80211 in your system is modern enough, and should not be replaced.
The error you're receiving does not mean that you need to edit any files or move anything. It just means that the two kernel packages I mentioned above are not installed yet.
Last edited by samstar; 05-21-2007 at 03:14 AM.