[rant]
Is there an epidemic of people not reading the doc? That's, like, the fourth exact same question in 12 hours.
So, once and for all: Read the doc (and the actual one inside the USBNet package, please, unless you like being confused), and start with the default config over USB, you don't need no stinking password that way. >_<".
[/rant]
There, I feel better.