Toggle proxy settings based on the wired/wireless connection you make

Without using third party software, is there a way to have Windows toggle your proxy settings on/off based on the wired/wireless connection you make?

I'm aware that I could create a registry script and run that each time to toggle the proxy settings but I'm more interested in something that would automatically trigger the proxy settings to change based on when a wired/wireless network connection was established.

You could try creating a proxy.pac file. Depending if you know both addresses (wired and wireless) you could try this:

function FindProxyForURL(url, host)
{
if (isInNet(myIpAddress(), "192.168.1.0", "255.255.255.0")) // Wired connection
return "PROXY 192.168.1.1:8080";
if (isInNet(myIpAddress(), "192.168.2.0", "255.255.255.0")) // Wireless connection
return "PROXY 192.168.2.1:8080";
else
return "DIRECT";
}

Then just point the browser to where you saved the proxy.pac file for the automatic configuration script.

I hope this helps.