Speakers for a small bedroom.

[Reficx]

Atm I have a sony home cinema system in my room but it's annoying, the ports mean it has mean it's impossible to hook up to my PC as I don't have a HDMI slot on my computer and the Amp it comes with doesn't have a jack.
Am I better off just buying a different amp? If so which ones would be compaitable and what cabling would I use?
Or would I be better of just buying a whole new setup?
Been told I should get 2.1 speaker setup in my room instead of 5.1

My speakers atm are:

http://www.google.co.uk/products/ca...=X&ei=TzJ_Td-UDqqAhAfo7LitBw&ved=0CGQQ8gIwBQ#

Thanks in advance.

 

[Reficx]

It doesn't have a jack in the front. Unless I provided the wrong one.
I bought it from Tesco's awhile ago now.
It has a USB port on the front and a Scart, HDMI and optical in the back.