Answer:
A potential problem is that the
key you are using is a word or phrase which is used by your router to generate
the real WEP key (which is a number in hex code). If this is the case, you could
try this link to find the real pass key.
You will need to type your pass phrase into the window and generate the hex number which is your
real pass key. Each phrase will generate four 64 bit numbers and one 128 bit
number.
You will need to try them all one at a time unless you know what level
of encryption you are using.