What speaker equipment do I need for PS3?

I'm sure this must be explained somewhere but I can't seem to find anything.

I watch films from my Buffallo Linkstation through the PS3 to a Samsung HDTV. I am after getting a surround sound system to use with it, but all the kits seem to come with a DVD player which I obviously don't want, what should I be searching for? I assume I need seperate speakers but do I need a box that they plug into?
Any help would be appreciated, thanks

 

You will need speakers and a surround receiver (Box).

But first, what is your budget?

 

I was hoping for under £150 but I don't know if that is possible?

 

At that price I think you would have to go for an all in one system.
The all in one DVD / Blueray box should be OK for you as long as they have a HDMI input for your PS3 and HDMI out to your TV.
Or an optical input coming from your PS3 to the all in one box, and then you can run the HDMI from your PS3 to your TV