Want to deploy an Internet connection for a company of about 60 staff.  Have a 25MBs connection to the Internet already.  It's terminated with a Linksys RV042 firewall and SPI firewall and that works well. But I would like to install a proxy server with some content filtering Any suggestions for good software that can achieve that (Windows please), What I have done so far is put Freeproxy on a Win2003 box and two NICs (one to the LAN, one to the external connection) but Freeproxy doesn't seem that robust.

Connection is only for Internet, no mail or VPN traffic.

Thanks