I must profess to being considerably uninformed on the subject of home theatre, however I'm looking to get one and am seeking the advice of people who already have 'em!

 - I'd ideally want one ~$500, I'm no audiophile so entry-level is fine with me. (Or is this like buying a laptop without internet.. there's just no point?)

 - I have a Sony Bravia V-Series w/MySky, a PS3 w/HDMI, and a Macbook - I'd love to be able to feed all three of those devices through the new audio system! Is this realistic/possible?

 - I don't need a DVD player, as I already have a PS3, but most of the home theatre systems sold I've noticed come with a DVD player packaged in the bundle?

 - Is wireless an option? Or will I have more cords lying around my room?

 - I'm not that keen on nailing stuff into my wall. I'm in a wheelchair so the easier I can stand the speakers on the floor or on shelves, etc the happier I'll be!

I know that's lots of questions but I'll be really grateful for any advice!

Cheers yall