Add Exception in internet explorer for proxy by script

when I connect to wireless network.. authentication page will appear to input the username and password...this page will appear  if I except it in proxy configuration from IE, otherwise it will not..
I used wpad to i can't add the exception manually...also i have a huge no. of pcs which is mean that i can't do it manually.. can i except the url of web authenticaton by script or by adding any code to wpad.dat file???

thanx experts
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in your pac (wpad.dat) file, you could add something like:

      if (shExpMatch(host, "yourhostname")) {
           return "DIRECT";


      if (isInNet(myIpAddress(), "", "")) {
            return "DIRECT";

some reference:

Hope that helps,

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yousef_adAuthor Commented:
thanx alot
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