New to linux, cannot get game to launch

[King_Of_Angmar]

Hey,
So recent windows user, my computer wiped the OS out for some reason so I gave linux a shot. Using Ubuntu 9.10 Karmic Koala. Graphics card is an ATI Radeon 300x.

I downloaded Regum and went through installation just fine, but when I tried to launch the game it wouldn't because either :

- My graphics card needs new drivers
- I don't have directx
- I do not have the capability of playing with my graphics card.

I know the last one is not true because it played well enough on windows XP.

When I downloaded the ATI drivers update specified on the Download section of the RO homepage it would not install for a reason that I have no idea - it could be that the graphics card is not compatible with linux until I do something to it? (I had to go through a few things with my wireless card before it ran on this OS)

Direct x does not run on linux does it? Do I actually need it, if so where can i get it in a linux format, all I found from google yesterday was windows directx updates.

Thanks for the help