Hello, With all these great xbox360 games coming out I'd really like to get myself setup with a decent sound system. I guess you can call me a stereo noob because I don't know crap about them. From what I can tell I'm going to use the audio adapter dongle that came with my xbox360 and plug my non existing speaker system into the dongle with a digital audio cable. I don't really know what I need. I have $250 to spend and hopefully I can be sneaky through some sales and get a nice system with that. The only problem though is I don't know what i need. Help!