After upgrading from Redhat 8.0 to 9.0 I wanted to compile the latest NVidia kernel module & GLX. Whenever I try to do a make on the NVidia or any other Makefile I get an error about missing makefile, etc. Everytime I've upgraded Redhat (and other Distros) it seems some of the symbolic links to kernel sources & libs get out of wack. This is why I normally do a fresh install. How can I fix this so I can use my newly, updated Redhat? Any how-tos or other documentation on upgrades of one release to another, the gotchs, and work-arounds available? I may be forced to do a fresh install if I can not resolve these problems. Thanks, Steve