Squid + FreeBSD 2.2.6 tuning

Hi,

I'll install tomorrow a brand new Squid cache
FreeBSD based (2.2.6).

Any of you folks has some "tuning" parameters
to optimize the cache performances with FreeBSD ?

Any www pointers welcome !

The machine will be a H.P. PII 300 Mhz with 192 Mb RAM
and 12 Gb harddisk and dedicated to this task.

TIA

--
Frank Bonnet 
Groupe ESIEE Paris
http://www.esiee.fr