Erm, if you get a "boxed set" disc then you can usually just do the install and it should see, install driver and configure the graphics card.
Similar to the nvidia driver, the only reason that it's not on the download version is cos it's a licencing issue. Even though it's free to download, it's not so free with third party distribution - other than "paid for" versions AFAIK!
If you get the "cheap" discs, then they are usually just supplying a pre-burned download version - which means that you end up doing the search like J.W. suggested and maybe posting further Q's here!