Connecting AirPort to D-Link DI-634M
To connect an Apple MacBook to the D-Link DI-634M wireless access point via WEP you need to prefix the password with '$'. From the D-Link website:
"To use encryption with the 2 products, you must use a HEX key instead of using a passphrase. To enter a HEX key on the Apple product, enter a dollar sign ($) before the key. For example:
For 64-bit encryption, enter $1234567890.
64-Bit requires 10 Hex characters and 128-Bit requires 26 Hex characters. Valid characters are 0-9 and A-F."
I just selected standard WEP and prefixed the password with '$' and it worked.