I'm trying to set up a proxy server using Squid and Squidguard with the Contribs.org distro, SME Server 6.5.

My question is:

I'm trying to make a kind of "whitelist" for squidguard. While in worktime, all the addresses in my whitelist shouldn't be blocked and all others blocked.

There are hundreds of internet sites that start with http://www.cm-"something".pt that I don't want to block.

Can I make something like http://www.cm-*.pt/ so that all the people can visit all that internet sites while in worktime without having to write them all???
If not, can somebody tell me how to do it??? (It's because there are hundreds of sites that start this way!!!)

Many thanks.