Yeh I was just looking and I think maybe the Radeon HD 4670 is a suitable card? That kind of price, if not cheaper. I was thinking they kind of specification though... or at least GeForce 8 series and above.
Do you know how the GeForce 6100 connects to the PC? As in, i'm assuming its PCI-E so I'd obviously want a card that can maybe just fit into it's slot?
Do you think i should Upgrade to http://www.ebuyer.com/product/120674 ?
I know you should often get better brands such as Corsair but this one seems very popular and the customer ratings are good.
Are PSU's easy to fit?