Squid (2)

Help with Squid please, I am able to access the Squid2 proxy across the my network (and locally) but I can not get Squid to access the outside world - I get a message from Squid saying that the URL can not be found. I am using a modem to access Freeserve - This works fine locally by giving Netscape the IP address and port of Freeserve. I do not understand how to make Squid see the modem as a port and/or Freeserve's IP address/port. It appears that all the documentation that I have found addresses every issue bar this. Also, Assuming that I can get this to work, is it possible to get the modem to auto-dial on demand (and drop out) or else be accessed over the net? I am using kppp at present. Adrian Wells