If you don't want to bother spending time programming an SD card for your older Raspberry Pi Model B, this is what you're looking for.

On an ample 4GB of SanDisk goodness, this card can be plugged into a Raspberry Pi Model B, and will go straight to the Bartendro UI on boot. 

Make sure you're using it with a compatible WiFi Dongle if you're trying to access the UI with wireless devices.