Help configure Linux Firewall + Squid Proxy to allow access to Gmail.

Hello,

I have a Linux server that runs Squid Proxy and has Linux Firewall
configured on it.

I am unable to access Gmail from my outlook and want to configure my
Linux Firewall and Squid to allow access to gmail.

I am not a linux guy and dont have access to one at the moment. So if
someone can help me figure out how to configure this it would help
alot.

btw; i have webmin installed on server and i can configure things from
there if it is simpler that way.

Please let me know

thanks
hk