What amp can do all this?

I wish to purchase an amp for a home cinema system , but I want to also connect the following below:

PS3 via hdmi cable
Sky+ via normal sky connector but well may upgrade to hdmi option later
PC - my lcd tv has a connection for the pc (like a normal pc flat screen monitor) but I will have a network connection on this pc and I have a video library so I want to watch the films via the home cinema amp, with the best quality I can afford. What does the Graphic and sound card connectors need to be to do this?