Re: All Graphics Cards related queries here.
@Sudhix,
I thought i ought to share my experience with setting up graphic cards in Linux.
First off, it is a huge ordeal to find appropriate drivers for ATI graphic cards for Linux. Even though Ubuntu is one of the easier distributions for graphic card installation, it still took me a whole day to get it setup. My card though is slightly exotic - an HIS X1800 GTO. And believe me, following Ubuntu's extensive documentation available on the wiki does not work in this case. So, if you are hell bent on getting ATI cards to work in Linux, be prepared to do some heavy duty browsing and of course reinstalling the OS multiple times.
However for any of the recent ATI graphic cards, you will have to download the appropriate non-free driver for gfx support in Linux. In some cases you will find pre-packaged and easy ways to set this up, while in others it is a struggle. For example, Dreamlinux is very easy and user friendly as far as graphic card support goes - it almost gives you out of the box support for all graphic cards - ATI or Nvidia. Vector Linux, Ubuntu, MEPIS and Opensuse are not far behind. Sabayon Linux needs a special mention - since its one of those rare distributions which come loaded with the non-free display drivers out of the box.
But on the other end of the spectrum, i wasnt even able to install Fedora Core 6 - no matter how hard i tried.
So if its Linux you are concerned with you are infinitely better off with an Nvidia solution. But i noticed your board is an ATI chipset. If you are really serious about Linux, then i would strongly recommend switching over to an Nvidia chipset, Core2duo processor (the X2's from AMD sometimes have problems getting recognized as dual cores in Linux - more's the pity!) and an Nvidia display card - one of the 6800's would do just fine.
But if you dont want to do a complete revamp, you can keep your processor and just change the motherboard chipset over to Nvidia and get an Nvidia display card.
But thats just my thought - you might want to look over more Linux sites like tuxmachines.org and other such similar ones.
Another quick thought - once you do get your ATI card working in Linux, make sure you take a backup of your xorg.conf file (found in your root) and save it somewhere on your Windows partition or a USB drive. That way, if you try multiple distributions like me, you always have a working copy of the xorg.conf which you can just copy in case nothing works!
All the best.