WEP = Hardcore
The reason why he said it's not a good idea. The 64 bit and the 128 bit hex will reduce the signal running though your network.
My
Enable WEP and have it running on 64bit hex
Make your password 10 chrs long with Numbers and letters
So if it's as3sfg33a
IT WILL all be in hex => 3b3a0f ect
That will be your password.