internet explorer proxy auto configuration

[btasaf]

Hello All,
I am trying to implement automatic browser configuration to redirect users to bluecoat proxy.
our current config is:
GPO configuration to redirect users to a TXT file that resides on a web server. with redirection to proxy and excluded sites.
the file structure is this:
function FindProxyForURL(url, host)
{
if (isPlainHostName(host) ||


shExpMatch(host, "127.0.0.1") ||
shExpMatch(host, "172.14. ") ||
shExpMatch(host, "172.15. ") ||
shExpMatch(host, "172.16. ") ||
shExpMatch(host, "172.17. ") ||
shExpMatch(host, "172.18. ") ||
shExpMatch(host, "172.19. ") ||
dnsDomainIs(host, "www.google.com") ||
dnsDomainIs(host, "www.walla.co.il")) {
return "DIRECT";
}
else {
return "PROXY bluecoat:8080";
}
}
This configuration is causing the browser to get stuck, but after closing the browser from Task Manager and starting it again every thing works fine.
So after a bit of reading i found that there are a few solutions:
1. PAC file configuration - using a webserver and GPO.
2. WPAD file confiuration - using DHCP.
got a little problem though, when using any of the configs above, the users cannot access the web inside the network.
dont even know if the IE get the configuration file.
And ideas on how to configure this to work properly?

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