Based on the screen shots, the proxy was ctunnel.com, owned by one Gabriel Ramuglia, currently of Georgia, but who used to run a computer repair shop in Fairbanks, of all places. I wonder if Mr Ramuglia has received any unusual visitors recently.
The law will probably get hard evidence from there, but read the comments here:
http://michellemalkin.com/2008/09/17/the-story-behind-the-palin-e-mail-hacking/
VERY interesting info about the certain son of a certain Democrat from TN who just might be involved. (FR doesn’t want names mentioned here)