My Opengl application runs slow on win2000,XP

[Ali Riz]

I've made a Game Engine using opengl and Visula C++ that runs fine on Windows 98, but that same application runs very much slow on windows 2000, XP.......
Please do help me I'll be very greatefull

[1234!]

You should ask this on the OpenGL:beginners coding board on this site.

You have to provide some more details to your question though.