I recently had to sort out a problem on a friends laptop which I sorted by using system restore. Unfortunately he had not told me that he recently had a new wireless router installed and now the wireless settings on the laptop are incorrect. I have tried typing in the 128 bit WEP key that he had written down, but a message tells me that the key is of incorrect bit length. Being a novice myself in wireless networks I am unsure how to cure this. Should the passkey I am typing be a password or the 26 character hex key which I have been typing in?
Have you tried the wireless passkey that is on the back of the BT Home Hub at least to get you in to the settings then you can of course change to WPA and input your own passkey, only a thought it might or might not help.
I had tried undoing the system restore but was told the system restore could not be undone. I will try your other suggestions when I next visit my friend. Just to clarify, my friends Home Hub is connected to his desktop PC and wirelessly to two laptops. Does the WEP or WPA option have to be set up on the laptop or does the key take care of this?