So, i downloaded FSX. The problem of SP1/SP2 Was fixed, and im having only ONE problem now...It tells me to get a geForce3/Radeon8500 class graphics card.Where do i get them?

If you are talking about FSX telling you that your graphics card will not run FSX and to get a better one then you just need to get a better graphics card, it does not have to be the 8500, which probably is not even available anymore, it has been out of production for a long time.The card that you get is going to depend on what your motherboard can handle. Before anyone can give any real recommendation post your motherboard and CPU combination along with your current graphics card. Your current setup may very well not have a separate graphics card and just has onboard graphics included with the motherboard.