Since you're using FC5, for some (IMO strange)reason the kernel-devel package does not come with the CDs while it does come with the DVD...
So if you only have the CDs, just do "yum install kernel-devel" (The kernel-devel package is placed in the extras repo and is now enabled by default in yum).
PS: The kernel-devel package will not give you a full kernel-source but only the headers (in most cases this is all you need). If you do need a full source tree, use the kernel*.src.rpm package.
Last edited by jens; 04-01-2006 at 10:27 AM.