How do i connect my ipod touch to my tv?

I would like to connect my ipod touch 1st generation to my composite imput on my tv. i know apple makes one but it is $40 and thats too much. i have seen them on ebay for $10 but they say it only supports firmware 2.2 and lower.
if you can tell me why this is or where to get a good deal i would be grateful.