Raspberry Pi : Using a 16x2 LCD:Raspberry Pi tutorial part#4
How to get 16x2 LCD display working from your Raspberry Pi's GPIO header
eBay listing has now closed (i've run out of stock) Please try tandy and maplins. Drop me a line if you get stuck.
Documents: http://goo.gl/5v8pS
Forum Post: http://goo.gl/AgSeY