When i type the command "rhlibrary", it says tixwish-tk4.1:
command not found
There was a description of this problem for Red Hat release
5.2 but the solution for that one did not help me with 6.0
This is a know problem and will hopefully be an errata or similar very
soon. Until then you can
ln -s /usr/bin/tixwish18.104.22.168 /usr/bin/tixwish-tk4.1
This will allow you to use the RH LIbrary CD with 6.0.
The procedure described appears to fix the problem.