Can't establish a network with Wireless-G Linksys router and Macs

Question

I have a Wireless-G Linksys router and two Macs. My DSL cable is connected to the modem, the modem to the router w/Ethernet cable, and the router to a desktop Mac out of port 1. With this setup, I can usually -- not always -- connect to my wireless network with my PowerBook, but then the desktop Mac cannot connect to the internet. Either Mac connects to the internet when hooked up directly to the DSL modem. I have reset the modem. I have connected to the router's console and everything seems to be in order.The PowerBook can connect to the internet through the wireless router as described above, so there don't seem to be any Mac/PC incompatibility issues at work.My local gurus and my ISP are stumped. Any suggestions?

Answer 1

Then , Connect the MACINTOSH Computer to Port 1 or
Port 2 on the Router.Hope you are Online. Now, 
Open a new Internet Browser Page, and in the address bar,
type http://192.168.1.1, press return, And when asked for
Username and Password,
Leave the Username blank and in the Password field,
type admin . This will help you access the Router's
Console. Now, Click the Tab " Wireless " at the top,
Rename the SSID from ' Linksys' to your preferred name. 
Save the Settings.
 Now, Click the Tab " Wireless " at the top, 
Then Click the Sub Tab in the Blue Line ' Wireless Security '
just below the Wireless Tab,
Set the Security Mode to WEP, Default Key as Key 1,
Encryption Mode as ' 64 Bits10 Hex Digits ' ,
Leave the Passphrase blank, Type a 10 digit Key
[ can contain 0-9, A-F ] in WEP Key 1 Field alone,
Copy the Key on a piece of paper for your reference,
Save the Settings. Now, Make your Computer Wireless.
Restart it. Once the Computer has restarted,
Go to " System Preferences",
Click on the Icon , " Network " , Set the Location to " Automatic "
Set the Show Listing as " Airport "
Now, Under the Tab Airport, Set it to
By default Join  a Specific Network.
Click the + Button to add a Network
As the Network name, type the same name of the Network
that you have typed on the Router's Console, by
delecting the name Linksys.
As the WEP Password , type a $ symbol followed by the
10 DIGIT Number that have had copied on a piece of Paper.
For Example, if your WEP Key is 0123456789,
you will type it on the MACINTOSH AS
$0123456789
Click Apply Now button Down below.
Now, Click the First Tab " TCP / IP,
Check the IP Address below Configure " Using DHCP " .
If it's in the range, 192.168.1.100
and the Router Id is 192.168.1.1  >>>>>>>>> COOL
Check whether you are Online wirelessly with the Computer
Revert back for assistance,
shriraj - the boss . . .