Squid & Igear

Hello from a new correspondent. We need to use Squid with a router which accesses the LEA proxy server. The LEA has a proxy with an authentication process based on IGear software. We need to get squid to allow our (Windows) clients to receive Igear's requests for authentication. At the moment they are blocked by Squid. Does the LEA need to reconfigure Igear for us or can we make some changes locally to Squid to overcome the problem? Has anyone got an answer please. Any advice would be much appreciated. Thanks. Mike Groom Network Support Technician (for schools)