MacBook wifi signal lost.

Hello ,
I have a problem with my wifi signal. I have an Macbook 1,1 , and the Airport Card is Airport Extreme.
The problem is that i keep losing my wifi signal. It happens every where. I can keep being connected to wifi about an hour then the signal is lost. If i try to reconnect it says that the connection timeout. Sometimes it happens after 5 minutes sometimes in an hour. i have found only one place where i can stay connected for ever.
Also i have found that if i use the Assist me option on reconnecting then i get the wrong password error, although the password is correct. At the moment i am at home my own Macbook can't connect to wifi, but my friend ibook is working fine. So if anyone has an idea how to fix this problem please let me know. I have been in contact with my local apple care company but they don't have the will or knowledge to help me.

... but they dont show up when it scans even tho they do show up on the macbook.
That would appear to point to a problem with the built-in AirPort Extreme card in the iMac. Either it is not configured properly or there is something physically wrong with it.
Let's double-check its configuration:
System Preferences > Network > AirPort
o Location: Automatic
o In the left column, verify that an AirPort option exists. If it does not, click "+" to create one. (Note: If you are unable to create an AirPort configuration, the AirPort card in your computer either doesn't exist or it is not recognized.)
o Verify that AirPort is "On." Click "Turn AirPort On" button if not.
o Ask to join new networks: (enabled)
o Show AirPort status in menu bar: (enabled)
Systems Preferences > Network > AirPort > Advanced
AirPort tab
o Remember any network this computer has joined: (enabled)
o Disconnect from wireless networks when logging out: (enabled)
o Require Administrator password to control AirPort: (disabled)
TCP/IP tab
o Configure IPv4: Using DHCP
o Configure IPv6: Automatically
DNS tab
o DNS Servers: <if required, add your desired DNS server IP address(es) here>
o Search Domains: <if required, add your desired DNS Search Domain(s) here>
WINS tab
o Enter desired WINS info or leave the defaults
AppleTalk tab
o Make AppleTalk Active: (disabled)
802.11X tab
o Enter desired 802.11X info or leave the defaults
Proxies tab
o Enter the desired Proxies info or leave the defaults

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While thinking of Brasil and weather- I saw on our public TV station a few months ago- a story about a fishing boat, I think south of Rio de Janeiro, who encountered a hurricane- and only one fellow lived. Ouch!
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BB623 wrote:
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~~~~~~~~~~~~~~~
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