Need Help!! Video drivers out of date??

Ok so i just got this nice new computer... Thought i would try to play some online game so i downloaded SL and everything appeared to be sweet... Installed it fine and everything but when i try to run it it comes up with this error saying my graphics card is either incompatible or the drivers are out of date? I looked it up i have a RADEON 9200 and the error also says that it only supports RADEON 8500 and up and geoforce or something. So... Do i need a new graphics card? Or how do i download the proper drivers to run this game? Because i downloaded the drivers from the ATI website and that didn't do anything or help at all... I would REALLY like to check out this game looks pretty cool so any help would be greatly appreciated. And i don't know a THING about computers so please dumb your answers down to my level. Explain like you would if you were having to do explain it to a 4 yr old child with a learning disorder Then i might pick up 1 or 2 things of what your actually saying

Thanks guys!!!