I recently moved overseas and am seeking help in setting up a Linksys E3000 with DD-WRT to stream Netflix to a Samsung home theater system. Can someone point me towards step-by-step instructions on picking a VPN service (with US ip) and configuring the VPN option in DD-WRT to be able to stream to the home theater system and my computer. Thanks.
The one thing I'd strongly recommend is using a separate dd-wrt router for the VPN client by configuring it's WAN w/ PPTP. It's so much easier and adds a lot of flexibility. Anyone or anything that needs the VPN simply connects to the VPN router, but otherwise, uses the primary router. No messing w/ the firewall and iptables.
To that end, you might want to visit StrongVPN.com first and examine their numerous tutorials that describe the process in depth, for many types of VPN clients, including dd-wrt (and they demonstrate PPTP over the WAN, my recommendation).