Un saludo, para el manejo de redes por internet explorer hay mucha documentación y buena en la propia ayuda del autoit: User Defined Functions-> IE Management, donde a parte de la explicacion encontraras muchos ejemplos funcionales, como este:
; *******************************************************
; Example 1 - Create a browser window and navigate to a website,
; wait 5 seconds and navigate to another
; wait 5 seconds and navigate to another
; *******************************************************
;
#include <IE.au3>
$oIE = _IECreate ("
www.autoitscript.com")
Sleep(5000)
_IENavigate ($oIE, "
http://www.autoitscript.com/forum/index.php?")
Sleep(5000)
_IENavigate ($oIE, "
http://www.autoitscript.com/forum/index.php?showforum=9")
; *******************************************************
; Example 2 - Create a browser window and navigate to a website,
; do not wait for page load to complete before moving to next line
; *******************************************************
;
#include <IE.au3>
$oIE = _IECreate ("
www.autoitscript.com", 0)
MsgBox(0, "_IENavigate()", "This code executes immediately")
Un saludo espero que te sirva.