didn't know you could right click in SSH... is that a mac thing?
I use a PC and use puTTy, and jsut connect to the ipod, go to the /Applications folder and type ./Cusomize.app/Customize
A whole bunch of stuff will scroll on the screen but that's just info being printed, it should load up customize on your ipod touch!
(And if it won't let you exit out of customize on your touch, just hit Ctrl+C on your comp and it should quit)