WRT54GS router connected, but not detected.

Question

I have my WRT54GS wireless router connected just like the Easylink setup guide told me to. It goes through the steps up to the point that it tells me to verify that certain lights are on. They are, so I click next. Here's my problem. On the next step, the computer attempts to detect the router, but fails. I can still connect to the internet through the router on my wired connection. On my wireless conection to my PS3, it obtains an IP address, but can't connect. On my wireless connection to my other computer, it finds the network, but can't connect.
I called Linksys tech support and was told it had something to do with my modem and I had to call my ISP. I called my ISP and they said it was a problem with the router.
I know none of the hardware is faulty, because it worked when the computers were in opposite positions. That leads me to believe it is some setting on this computer, but I have no idea what it could be.
Can someone help?

Answer 1

Access the setup page of the router by launching an
Browser and type on the address bar, 192.168.1.1 and press enter. When
it prompts for the username and password, leave the username field
empty and provide password as "admin" (Without quotes)
click on ok.
On the main setup page the ""Internet Connection Type"" should be
on ""Obtain IP Automatically - DHCP “. Click on the Save Settings
button.
Now click on the sub tab ""MAC address clone"".
- Click on enable
Click Clone & click save settings
Check WAN Ip on Status page of router ....
If getting Valid Ip .... try going online
If not ... power cycle for 4-5 minutes & then again check the WAN Ip address .....