Hi,

This will require interop to the windows API.

Once you have the hwnd of internet explorer you can use the EnumChildWindows
to locate the combobox, for IE 6 the class name is ComboBoxEx32 and the
control id is 0xA205. The caption of the control is the URL in the address
bar.

Hope this helps

If you're only interested in IE it may be better to use the COM APIs
in Shdocvw.dll. If you Tlbimp it you can write code like this to dump
info on all IE (and Windows Explorer) windows.

foreach (InternetExplorer ie in new ShellWindows())
{
    Console.WriteLine(ie.HWND);
    Console.WriteLine(ie.LocationName);
    Console.WriteLine(ie.LocationURL);
}

Mattias