squid banner zapping and antivirus filtering

["Dave" <dmehler26@xxxxxxxxxx>]

Hello,
   I'm setting up a box for a friend, a FreeBSD machine that does firewall 
and nat for his local lan. I've added squid as a transparent proxy so i can 
also add in adzapping and antivirus and later if the situation calls for it 
content filtering with dansguardian.
   I'm using squid 2.6.17 i believe the version is and this time it's not 
working. I'm wondering if one of my squid parameters is wrong, should a 
redirector be called with redirect_program or url_rewrite_program? I'm using 
adzap's zapchain as the squid redirector and running suqidguard, 
bannerfilter chained off of it, i tried to run squidclam for av but that 
program kept core dumping. For such a setup would raising the number of 
redirector processes from 5 to 10 be advisable? I don't want to go out of 
memory with this setup. If anyone is doing this with other programs i'd like 
to hear experiences as well.
Thanks.
Dave.