How to -- use another PC as proxy/tunnel?

[mgellan]

You need to set up a Virtual Private Network (VPN) with your home setup so you can connect securely to your home network and route traffic through there - see http://openvpn.net/ as an example - you can run it as an appliance as a VM. Not sure if there's anything like it for XP.

OR, more simply, subscribe to a commercial VPN like BTGuard ($9.95/mo) that you connect to via VPN - their default port is 1025 and might be blocked but you can change it to 80/443 so it's not blocked. It has the added benefit of anonymizing your traffic even from home so no one can ID your home internet IP if you might be using BitTorrent or similar tool. Using a commercial service will probably be fastest since they're well connected to the Internet so you're not getting hit with your shitty hotel connection as well as your home connection.

EDIT: Windows 7 apparently allows incoming VPN connections but it probably won't route traffic through your home internet.

Regards,
Mg