|"i haven't removed my drivers for my past card a Nvidia 210? not sure if i need to as they won't be working?"|
When you install a card with an ATI video chipset, the previous specific drivers for a NVidia video chipset would not be loaded in any case.
However, that software is using drive space - you might as well un-install them if you don't intend on ever installing the NVidia card again.
However, if the previous card had an ATI video chipset, the previous specific drivers for an ATI video chipset may not work with the present ATI video chipset - the previous specfic drivers for an ATI video chipset should be un-installed BEFORE you install specific drivers for the preseny ATI video chipset, preferably BEFORE you you plug in the video card.
"How do i uninstall the drivers already on there?"
You go to Programs and Features in Vista or Windows 7 (in XP back to Win 95, you go to Add or Remove Programs). Find the listing for the siftware you want to un-install, click on it, Un-install it. There may be more than one of those for a video adapter. You may need to go back there to un-install all of them. ATI video adapter software often have a selection that un-installs all other listings for the ATI video adapter software.
E.g. in Windows 7, click on Computer, in the bar at the top select Uninstall or Change a Program
Or - Control Panel - set the View as setting to Small icons or Large icons, NOT Categories
- Programs and Features
"Also i've tried all resolution and colour settings etc and all don't produce a crisp pictures, infact the colour is harsh no matter what, and the icons and images seem very pixelated."
The strength of the colors is primarily set on the display itself at the other end of the HDMI, VGA, or DVI cable.
When that is more than, say, a year or two old, it's usually NOT a good idea to use default settings - Auto or Preset settings - they often get out of whack as the display ages. Custom set the settings - Contrast, Brightness, Color strength or similar, etc., so the colors are how you like them to look. Set the brightness low enough so it looks bright enough but the colors - especially red - are not excessively strong. The same applies to TV displays.
A side note - if the display is bright enough for everything except for certain games or movies played in Windows, the brightness can usually be set in settings for the game or in the program that plays the movie, rather than you increasing the brightness on the display itself for everything.
LCD, LED LCD, and Plasma displays have only ONE resolution setting that they look best set to. They will NOT look as good when set to other resolutions.
(That does NOT apply to CRT - tube - monitors,)