[squid-users] I can't see to cache this site

I have this set in the config:
refresh_pattern . 1440 20% 1440 ignore-no-cache ignore-
no-store

Any ideas how I can get this site to cache?

200 OK
Cache-Control: no-store, no-cache, must-revalidate, post-check=0, pre-
check=0
Date: Tue, 03 Oct 2006 20:05:26 GMT
Pragma: no-cache
Via: 1.0 sq0.foo.com (squid/3.0.PRE4)
Server: Microsoft-IIS/6.0
Content-Type: text/html; charset=UTF-8
Expires: Thu, 19 Nov 1981 08:52:00 GMT
Client-Date: Tue, 03 Oct 2006 20:05:26 GMT
Client-Junk: WebQuota/AuthentiX ISP ISP Version 5.7b: 11072224003
Client-Peer: 127.0.0.1:3129
Client-Response-Num: 1
Proxy-Connection: close
Set-Cookie: PHPSESSID=c5b6a6566eca5cd4dd4d19dfbcc92eb8; path=/
X-Cache: MISS from sq0.foo.com
X-Pingback: http://xxxx.com/xmlrpc.php
X-Powered-By: PHP/4.4.1
X-Powered-By: ASP.NET
Received on Tue Oct 03 2006 - 14:09:37 MDT