My original problem was not being able to see the webmin module, File Managers. It came up with something like "Java not installed"

This is on a Centos 5.x server x86_64

To over come this I did the following.

1. Upgraded to the latest firefox
2. yum upgrade firefox
3. Went to the java website
4. http://www.java.com/en/download/manual.jsp
5. Downloaded, near the bottom, Linux x64 RPM
6. This gave me jre-6u26-linux-x64-rpm.bin
7. Once I had the file
8. chmod 777 jre-6u26-linux-x64-rpm.bin
9. sh ./jre-6u26-linux-x64-rpm.bin
10. This should also in stall the rpm, to test type
11. java -version
12. This should produce
    java version "1.6.0_17"
    OpenJDK Runtime Environment (IcedTea6 1.7.5) (rhel-1.16.b17.el5-x86_64)
    OpenJDK 64-Bit Server VM (build 14.0-b16, mixed mode)
13. Now we need to link with firefox.
14. mkdir /usr/lib64/firefox-3.6/plugins
15. This may already exist.
16. cd /usr/lib64/firefox-3.6/plugins
17. ln -s /usr/java/jre1.6.0_26/lib/amd64/libnpjp2.so libnpjp2.so
18. Restart firefox
19. Type in about:plugins
20. You should see java in the list
21. I then went to Webmin, logged in, went to File Manager and now java worked.