need help buying home theater surround sound?

i just bought this hdtv and i need surround sound

http://www.bestbuy.com/site/olspage.jsp?skuId=8996811&type=product&id=1218007841626

i dont know anything at all about buying surround sound like price or extra wires i need. can someone tell me what to look for and the cheapest i can get that will still sound alright. im not looking for anything fancy i just want a better sound. any information will help

Related posts:

1. Hi I want to buy home theater surround sound speakers. If there anything that I should know?
2. Home Theater Surround Sound?
3. Playing computer sound on surround sound home theater system?
4. WIll someone please help? Just bought a home theater surround sound system. Plugged all in, not working?
5. how to connect a dvd/ home theater with surround sound to a samsung hdtv?