WRT54G & XBOX 360 Wireless Networking Adapter-Router doesn't see my SSID

Question

I purchased a XBOX 360 networking adapter yesterday.  I hooked it up and serched for networks and it doesn't see my SSID through the linksys router.  Before I purchased the 360 adapter, I could hard hook it to the router and it worked fine.  I called 360 and they suggested that I open my MAC on the Linksys Router so that it would recognize it, but I do not know how to do that.  I know how to get into 192.168.1.1, but don't want to do anything crazy.  Please advise. I'm not a novice, but not an advanced router owner.  Thanks,
WRT54G v.8

Answer 1

SSID Broadcast should be Enabled on your router...
Open an Internet Explorer browser page on your wired computer(desktop).In the address bar type - 192.168.1.1...Leave username blank & in password use admin in lower case...
For Wireless Settings, please do the following : -
Click on the Wireless tab-
Here select manual configuration...Wireless Network mode should be mixed...SSID Broadcast should be Enabled...Check what is your SSID(change the SSID if it is Linksys)...Click Save Settings if you have changed anything...
Click on the subtab Wireless Security, if the Security Mode is WPA/WPA2 change it to WEP, if it is WEP take not of Key1(this is your wireless security)...
X-Box Setting : 
1. Connect the appropriate wireless network adapter to the console. On the Xbox, a Wi-Fi adapter that connects to the Ethernet port (sometimes also called a wireless network bridge) must be used. Alternatively, the Xbox 360 is also designed to work with certain Wi-Fi game adapters that connect to a USB port.
2. Turn on the console and navigate to the wireless settings screen. On the Xbox, the menu path is "Settings -> Network Settings -> Advanced -> Wireless -> Settings" On the Xbox 360, the menu path is "System -> Network Settings -> Edit Settings."
3. Set the SSID (network name) on the Xbox to match that of the wireless router. If your wireless router has enabled SSID broadcast, the SSID name should appear pre-selected on the Xbox display. Otherwise, select the "Specify Unlisted Network" option and enter the SSID there.
4. Specify "Infrastructure" as the Network Mode. (Infrastructure is the mode used by wireless routers.)
5. Set the Security Type to match that of the wireless router. If your router uses WPA encryption and the type of adapter connected to the Xbox does not support WPA, you will need to change your router settings to use WEP encryption instead.
Note that the standard Microsoft Xbox 360 Wireless Network Adapter supports WPA while the standard Microsoft Xbox Wireless Adapter (MN-740) only supports WEP.
6. Save your settings and verify the network is functional.
On the Xbox, the Wireless Status screen displays whether a connection has successfully been made with the wireless router, and the Connect Status screen displays whether a connection has successfully been made through the Internet to Xbox Live.
On the Xbox 360, use the "Test Xbox Live Connection" option instead.