Download Wi-Fi WEP Key Generator by Brady & Associates, LLC.
There are literally millions of older Wi-Fi equipment installations that cannot benefit from the newer WPA wireless protection encryption algorithms. Primarily because the equipment manufacturers have abandoned the equipment and no longer provide updated drivers / firmware upgrades.
Some manufacturers build what are known as 'passphrase generators' into their equipment. This basically allows the user to enter an easily remembered phrase and the equipment generates the WEP key based upon an algorithm built into the equipment... and there lies the rub.
Every manufacturer seems to do it a bit differently, if they do it at all. There doesn't seem to be any kind of standard toward implementing WEP. This creates lots of problems when you are trying to connect devices from various manufacturers because the results from their built in passphrase generators are ...
