[CentOS] DNS Caching for a satellite link

I'm on a satellite link, and I've got a caching DNS server set up.  
Several popular sites have very short DNS cache times set in their SOA 
records, and I'm trying to over-ride them so that our link isn't swamped 
with DNS queries.  Anybody know how to force the DNS cache to hang onto 
the info longer than the SOA TTL?

Yes, I know the arguments against doing this, but in this particular 
instance it makes sense.

I'm using CentOS 5 and bind 9.9.3.

Thanks!

Also, do caching web proxies like Squid still speed up the web 
experience over a slow link what with all of the dynamic content on the 
web these days?

Ben Weiss

-- 
BENJAMIN J WEISS
CPT, SC
1st BN 179th INFANTRY
S6, Base Defense, Camp Bucca, Iraq
"Always Ready!"