Some folks are restless, they can’t sit still and one outlet is to constantly break open their gear and see what’s inside.  Tnkgrl is such a person and she mods everything she touches.  She’s already added a lot of functionality to her Acer Aspire One netbook and today she shows how she added 3G.  It sounds like a painful experience with micro-soldering and everything so you may want to read her account a few times to get the hang of it.  Scary stuff.