What is OS2?
Not knowing anything about your computer setup except for the Graphics Card model. I went to AMD Support and inputted the following data to get the last known AMD Driver for your LEGACY card which is no longer supported by AMD anymore.
I inputted the following data: Desktop Graphics - Radeon X Series - Radeon 1xxx series - Windows Vista x64 and got this driver from 2010: Legacy .
If your OS2 is not Windows Vista than go here and input the same data except change the OS from Vista to the one you currently are using : Download Drivers