Not sure if this is correct so anyways..

AC input 220-204V-,5A,50Hz
DC output 350W

If i'm right I don't hit the needed 500W but I wasn't so good at electronic stuff at school anyways :3

Correct. If you want to go for a 6850, then you'll need to get a more powerful PSU.

Thanks, now is there any brands that are worth looking at? And what power should I go for, I being looking and would around 700 be the best choice?

And yet again seriously sorry for all the questions its like I'm being spoonfed :l

750W Corsair if you've got the dosh.

Well I'm planning on doing this for x-mas :p, since Doll money isn't the worlds most fulfilling way of having money ==; anyways the price of the Graphics and PSU is around £240ish

http://www.google.co.uk/products/catalo ... CDYQ8wIwAA

This is the one your talking about right?

Yepp but im pretty sure if you want to save you could just get some random one But that should last a long time

Ah don't worry, a lot of tech sites can be a bit obtuse when it comes to explaining things. They aren't always particularly clear about the basics.

Like I said 750 would probably be ok.

Im running this: http://www.google.co.uk/products/catalo ... CEkQ8wIwBQ

With:
AMD Phenom II X4 @3.2Ghz
4GB RAM
GTX 460

So even 500 will suffice but I will need to be upgrading as well.

Thanks for all the help then guys (: much obliged for it. One other thing if I was to buy a new case would I need to search for a particle one or is it pretty much any case will fit anything? I know you get different sizes of cases etc.