I tried to download this file and got a page on the ATI site that says the file/page is not accessable. Of course, searching for the app on their site is pointless because everything except what your looking for comes up.

Anyway, here is the link to the page with the download (if they will let you link to it):

https://support.ati.com/ics/support/default.asp?deptID=894&task=knowledge&folderID=27

If this works like I have been told it does, it should be pretty kewl since I just got an AirPort Express.