Ive got a laptop. Been a great computer for me but it has one feature I am unable to use. It has a built in FM tuner - something I would like to utilize. The software is easy but I lack the antenna to receive a signal. There is a Jack to plug in a antenna. Problem is: The jack seems to be a unique (propitiatory??) size. it is larger than a 3.5mm headphone jack. Anyone have any ideas of what size plug this may be??