Here's the Apple URL to their directions for the instructions below
You have to get the bluetooth keyboard in "discover" mode.
1. make sure you have fresh batteries
2. hold down the right side button for 4 seconds or until the green light starts blinking and keep holding it, until it goes out, then release
3. lowtide -> Settings -> Custom settings
4. Settings -> BTstack - Searching...
5. briefly tapp the right side button to turn it on, get a green light
6. the keyboard icon, with its name and bluetooth address will appear, along with any other BT devices in range
7. use remote to select your keyboard
8. paring process should begin, it should prompt to type a sequence on the keyboard like 0000
9. it will complete the pairing and say something like "xyz's keyboard is connected"
A. mouse and iTouch, iPod will be discovered but haven't seen a pairing process, but haven't explored it either
B. after the pairing anytime the keyboard is in range or its freshly powered up it will recognize and auto-pair, sliding up a small transluscent notification of the connection
C. keyboard keys like arrow keys ESC, Enter work as expected, mappings seem near perfect for lowtide, a bit odd for xbmc
D. occasionally will get dbl clicking if you try to pair more than once (like trying to document), power reboot and reconnect "once" or let it autoconnect to clear the problem
Haven't seen the mouse actually be useful, but also haven't worked at it hard.. I've rationalize there are no apps that really need the mouse yet.