It varies quite a lot from laptop to laptop (DVI,Mini DVI, display port, mini display port, HDMI......) - if you could post the model that you've got then it would give a better idea as to what you'll need
Looking at the specifications for your laptop you have a HDMI socket - so if your TV also has one then you should be able to buy a HDMI lead and you are good to go.
It also has a VGA port/Mini D-sub 15-pin for external monitor, so you can get a lead for that. If you do it that way you will also need audio leads that will go from your laptop to your TV.
Yeah, that's the only problem I find. I just plug my speakers into the computer so I can actually hear it. Laptop speakers alone are always too quiet for me.