Laptop is not detecting wireless router

Thanks in advance for any assistance.
Equipment:
Gateway 450ROG
Intel PRO Wireless LAN 2100 3B
Linksys BEFW11S4 Wireless Router
SSID is enabled
Channel 1
I bought the laptop used and I upgraded it to WinXP SP2 and now it is not detecting any wireless nteworks. There doesn't appear to be an exteranl switch for the radio on the laptop. All drivers have been upgraded to their latest version. I was able to do this via a wired connection.
Help. Thanks.
Darrell-

Right Click on Intel Utility on the Tool-bar Try .... click use windows to configure the wireless settings ....
Go to start >> run >> type "services.msc" (without quotes) >> Under that list ... look for Wireless Zero Configuration >> Go to properties >> Use Start up type as Automatic .>> Click Apply & OK ....
Go to wireless network connections .... under view available wireless networks .... see if you are able to get your home network or not ...
Try to connect to it ....

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Replacing your wireless router try here.
http://www.hp.com/global/au/en/wireless/reconfiguring-system-help3.html
Say thanks by clicking the Kudos Thumbs Up to the right in the post.
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Laptop is not detecting wireless router

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