I purchased this barebones Desktop this week (http://www.novatech.co.uk/novatech/prods/barebones/Novatech/BB-542G43.html), and i'm looking for a graphics card for it. I'm not up on the latest tech or prices!
It doesn't need to be amazing. I don't play the most recent games on it or anything. Something sub-£50, that can support dual moniters.