*.BIN files are usually the firmware for the router -- you only need a wifi adaptor on your system and NOTHING for the router
let's confirm who has what;
- you have the ISP account
- and at least some modem
- and have a connection to your system
- now the roomrate want's wifi access to your ISP
- and she has wifi in her system
take the new WRT54G v.5 and connect it (wired) directly to your system and nothing else. you access that routers config page using your browse and enter
the default router's ip address http://192.168.1.1
it will prompt for user/password
(Leave the username blank and enter "admin" as the password )
find the router setup and disable DHCP
enable WiFi
set the channel and SSID
set a WPA passphrase
change the admin password (WRITE IT DOWN!!!)
save the settings and the device will restart
now disconnect your system from the router.
connect the WRT54 using a LAN port to a port on your modem/router assuming it has multiple connections[*].
connect your system to your modem router as usual.
you will have normal ISP access and she can use her Wireless Network Wizard to
connect to your new SSID using the new passphrase.
[*] if your modem/router has only one connection, that's still ok too,
just wire your system to one of the WRT54 slots -- it works either way