Viewing it is no probem, but I think your prpblem will be controlling the PS3 remotely. As far as I know it is controlled by Bluetooth and the Slingbox relies on IR to control devices remotely. I know Logitech produce an IR-Bluetooth adaptor, but despite repeated efforts we have never been able to produce a working Slingbox remote
If you're looking to placeshift your PlayStation 3, Playstation 2, Xbox 360, Xbox, or Gamecube then you should look at Spawn Labs. Their Spawn HD-720 can placeshift your video game console to a computer in 720p at 32 fps. Plus one Spawn HD-720 can placeshift two videogame consoles albeit one at a time.
However, if you're just looking to get Netflix streaming from a foregin country, then I suggest using a proxy service provider. This will mask your location and give the impression your connection is originating from the proxy server's location.