No, she doesn't need a network adapter of any kind. It's actually a DG834G; to configure it, do the following:
1) Run a Cat5 Ethernet cable (patch or crossover) from a port of the router to the RJ45 LAN port on a PC - any PC, laptop or desktop.
2) Open a browser. Type 192.168.0.1 into the address bar. Enter the default access name and password for Netgear routers, as detailed in the PDF manual.
3) Enter AOL's ISP settings and your account login and password, including AOL's unique MTU value of 1400.
First part of the job done. Now you can start enabling and configuring the security features and encryption protocol.