Код:

#include <IE.au3>
$sImgDir = "c:\foo\"
DirCreate($sImgDir)
$sWebPage = "http://www.autoitscript.com/forum/index.php?"; webpage with images
$oIE = _IECreate()
_IENavigate($oIE, $sWebPage)
$oIMGs = _IETagNameGetCollection($oIE, "img")
; Loop through all IMG tags and save file to local directory using INetGet
For $oIMG in $oIMGs
$sImgUrl = $oIMG.src
$sImgFileName = $oIMG.nameProp
INetGet($sImgUrl, $sImgDir & $sImgFileName)
Next
ShellExecute($sImgDir)