Error Nagmin (1) - Version Issue

1. The Error (Error: version issue):
Some error found when your login webmin --> Server --> nagMIN Network Monitoring. Error message:
The MySQL client program /usr/bin/mysql does not appear to be the correct version. Webmin only supports MySQL versions 3 and above. The command /usr/bin/mysql -V returned : /usr/bin/mysql Ver 14.12 Distrib 5.0.22, for redhat-linux-gnu (i686) using readline 5.0 Suggested fix: open terminal and type

vi /usr/share/webmin/nagmin/index.cgi
find "distrib" and add "| 5" after 4 at same line
save and quit the vi.