Imac Software Restore

how can i jailbreak the new ipod touch third gen 3.1.3?. please help!!!?

i just brought a ipod touch from argos (8gb, 3.1 software, third gen). i downgraded it from 3.1.3 thrd gen to 3.1.2 sec gen! this was successful but when i downloaded blackra1n and made it rain it started to work and even the pic came of the man in the rain on my ipod but however it then gets a sign on it to plug into itunes then my imac comp tells me it has dicoverd a recovering mode and there is noway i can use my ipod unless i restore it!!!! PLEASE HELP I REALLY WANT TO JAILBREAK THIS!!!

Gain access to a computer with windows. Windows will let the process complete.

Video of the discs, Mac OS X 10.0.3 Cheetah CD & Mac OS 9.1 Restore Discs.EBAY UK Item: 320401080663