Hamachi allows me to see computers anywhere through a VPN tunnel - like my home computers from work through the firewall. I love it and it use almost daily.
I use a secure password generator to create the network password. email it to one of my public emails - then write down the non obvious network name and just for good measure copy it to a thumb drive in my keepass database.
I found this post about making it run as a service (on the home w2k3 server)
I found this post about how to get it running on a thumb drive.