If i were you i would look through the guides in the user submitted guide section, there is a bunch of guides for doing it.
I've been looking around the website and I've find some webpages stating it's a fraud and they have no software to download and others say that it works perfectly. I'd personally stay away from it.
Never pay for a jailbreak. Ever. iPhone 2g's should still be susceptible to the bootroom (hardware) exploit. Use pwnagetool.
Just go on your ipod, then go to safari, then type 'Jailbreakme.com' then it jailbreaks your ipod automatically.