Cannot program a second ignition key
 

Our second hand Honda Accord came with only one key. Our local Honda dealer
has tried to program a second key for us but they've not been successful.
They have obtained two new "blanks" from Honda UK, and also tried a new ECM
as recommended by Honda UK. They have now said there is little else they can
do. We've now obtained the second original key and keyless entry fob from
the previous owner but this key also refuses to work..... I'd really
appreciate any help anyone can give. Thanks,
Wayne.