Application error

I have been runnin gmy code based on OPENGL until the system hanged and I had to restart my computer. After restarting, when I try to excute my code, I get the message error “The application failed to initialize properly (oxcoooo142). Click on OK to terminate the application.” I am using as a comlier MS-visualC++ 6.0 on a Windows 2K machine. I cannot excute any OpenGL based but I can excute any other code. After searching a solution for this problem, I found out that one of the .dll files got corrupted when I restarted my PC. I reinstalled MS-visualC++ but with no luck.
Does any one know how to solve this problem?