2nd Router as access point/bridge??!?

I have a Linksys WRT54G2. I want to be able to use this as an access point. I want to use this to use my wireless and then output to my ps3 and my tv for viera cast. So basically I want it to soak up the internet, and then wire my ps3 and tv into it. Im not sure if I want to set it up as an access point or bridge. I am really confused as to what to do. I want to be able to plug my ps3 and tv into the router, and have the router use my already set up wireless network. Thank you in advance.