Ask HN: techniques for recovering a stolen laptop?

So my house was burgled last night, 2 laptops were taken, a mbp and a windows xp netbook. :(  I have prey source http://preyproject.com/ on the mbp so that should help. On the win xp machine I don't have much, aside from  dropbox.  

Does anyone have any good ideas for geolocating or some other technique perhaps even social eng. tricks that might help me point the police in the right direction and maybe help me recover them?