Hey,
I've just bought a PS3 (hasn't arrived yet), and I was thinking as it only has wireless-g it wouldn't connect to the airport extreme station which is a few rooms away with a decent connection for online play. So, if I bought an airport express, planted it next to the PS3, whacked in an ethernet cable from the PS3 to the airport express, would it work BETTER than it would have without the airport express. Generally, in my house, I get a better connection when a wireless-n capable machine is using the internet, as some wireless-g laptops loose their connection close to where the PS3 will be, hence the idea thinking it would be better if I got an airport express to extend it.
Must go, being nagged to go for some food.
Andy