Squid, SNMP/Zenoss and mib.txt?

[Peter Gaughran <Peter.Gaughran@xxxxxxx>]

First timer, so please be gentle :)

I've got squid installed on RHEL 6, latest version available. I've 
installed snmp but I'm getting

/etc/squid/mib.txt: No such file or directory

when I try to do an snmpwalk? Any references to mib.txt creation refer 
to --enable-snmp when compiling squid, but as I installed it with yum, 
I'm a bit lost...

Also, any one use the Squid Zenpack for Zenoss? 
(http://tanso.net/zenoss/squid/)