I have an old game that my husband wants to play again, it worked a few months ago when I played it. It now says that it cant find the OpenGL video card driver and tht I need to reinstall it. How do I do this? How can something just disappear? 
:mad: PLEASE HELP !!! THANK YOU !!!
it is better if your provide details on your machine, OS version, card name, etc
often this means Windows has replaced original video driver by its own, not-opengl accelerated.
got to ATI or NVIDIA website (or whatever is your card manufaturer), download and install appropriate drivers.
Thank you! 
It is Windows XP and Nvidia GeForce 4 MX Integrated GPU. Thank you!