Setting up a modem without an ethernet connection on a computer

> Netgear's setup instructions call for connecting the modem to my
> computer with an ethernet cable.  My computer is MacBook Pro without an
> ethernet port.  How can I get around this?

   The easy way might be to obtain (borrow, buy, rent, steal, ...) a

computer with an Ethernet port, or else get an Ethernet adapter for your
(unspecified) MacBook Pro.