I need to put a graphics card in my Optiplex 760 Desktop and am wanting advice. From my limited research it seems that I need to consider a few things (1) I need a low profile card (2) I need something that doesn't require much power (the desktop runs on 250 watts). Can anyone confirm the above and/or suggest a decent graphics card within these parameters? I want to spend up to £50. Will installing a card be fairly easy?