Try to check HP's Mini 311 photo below, a regular machine with an extra antenna which has been modded by its owner to catch a much better wireless connectivity even three-blocks away from its location. This story was spotted by Netbooked from one of HP's community site showing handful of photos of modified version of Mini 311. I just think how this person manage to add an extra device just to make it more better by taking some risk.
According to source, this external antenna has been modded in a very easy way and he's now receiving 54Mbps of wireless but in unusual connectivity length. See the following web address below for more: