use a program to jailbreak it (it works on ipod touch and iphone) and only requires you to plug in your ipod to the computer and run the program on the computer, but you can also run it straight from the ipod through a web browser exploit or something
What firmware do you have? ill get you the program
here use this site jailbreakme.com (go to it on your ipod and it will do it for you automatically)