Upgrading my RAM

Hello,
I want to upgrade the RAM on my computer and i just wanted to make sure that im buying the right RAM. This is my computer (or at least its a very similar model with the same stats) : http://www.pcworld.co.uk/gbuk/hp-pavilion-dv6-7050-refu...
and this is the RAM im looking to get : http://www.offtek.co.uk/ddr3.php?subcat=101&subcat1=111... (its the second one down the 204 Pin DDR3 Non-ECC one)