Can anybody help me with this imac G3 crt

I cannot get the driver to connect it to internet.

I have a wireless lan usb from sweex and now i will connect in to the imac, but i get the message "no drivers, i have to get it from the internet".

I cannot find any drivers for it.

Should i upgrade it to os 9.2.2 to connect or...?

When i update the imac, all programm and files are not erased??

regards john