Here’s my configuration:
DSL modem -> router (D-Link DIR-100) > wired switch (D-Link 10/100 Fast Ethernet) -> wireless access point (D-Link DAP-1360) – iPad 2
DAP-1360 is configured as a hidden wireless network, uses WPA 2 and User Limit to 2. (Windows XP for iTunes and the iPad 2). For Windows XP, I used Linksys WUSB100 RangePlus Wireless Network USB adapter.
The router also doubles as a hub/switch but then it’s only 4-port so I added a wired switch to accommodate more units. It’s a mixed wired and wireless network.
iPad 2, simply awesome!