Nty to boobies, however I'm not sure if there's any jailbreak out for 4.0.2 yet but there is one for 4.1.
I jailbroke my friend's 2G MC model on 4.1 with GreenPois0n:
[ame=
https://www.youtube.com/watch?v=UlvFE3bj118]YouTube - Jailbreak Your iPod Touch 2G on 4.1 With Greenpois0n (MC and MB Models)[/ame]