there you go

you stil need to tel us more about the imac and like i said that sweex usb lan connector might not be compatible with mac os 9

it might need mac os x or isnt mac compatible at all

upgrading to 9.2.2 wont delete your files unless you initalise the hd your self

edit : how ever never EVER assume a upgrade liek that wil go without a hitch always back up your files before you perform a upgrade like that