I picked up a cheap AirPort Express 802.11N with the intent of using it as a wireless-to-Ethernet bridge for an old iMac G3. I've read tutorials of how to set it up that way on modern Macs, but I only have iOS devices, and I can't find the 'Allow Ethernet Clients' setting on the iPhone version of AirPort Utility. Am I out of luck and needing to find a friend with a Mac to set this device up, or is it nested in a different setting I haven't found yet?