Set up WRT54G V7.0 with windows Vista

Question

I have a WRT54G V7.0 which was working but stopped for no apparrent reason and when I couldn't fix it I RESET it. I have been through the cable setup instructions hundreds of times since without success.
do I have to generate a new WEP key?
Do I have to clone  a MAC address.?
In the Router setup Status screen the the IP address is all zeroes (0.0.0.0) even after  I click  DHCP Release first then click DHCP Renew and  then perform a power cycle.
Windows can see the SSID but when the computer tries to connect Wirelessll it says "windows did not receive any response from the wireless router or access point"
I would be most grateful for any suggestions as I have spent  many frustrating hours trying to figure this out

Answer 1

Reset the router and reconfigure it .
Before doing the following steps, you have to connect the modem to the
router's Internet Port and the computer to the Ethernet Port Number 1.
1. Press and hold the reset button for 30 seconds.
2. Then, unplug the power keep holding down the reset button for
another 30 Seconds.
3. Plug back the power back in, and keep holding down the reset button
for 30 Seconds.
4. Release the reset button.
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 .....