If you're having trouble, could you tell me your ? I can find the exact official driver link for you. How to upgrade opengl 2.1 to 3.3+ on windows 7 x64 bit
You must reboot your PC for the new OpenGL 3.3 instructions to be recognized by your system. Critical Compatibility Notes
There is no legitimate OpenGL 3.3 repack for Windows 7 64-bit. Anyone selling or sharing one is scamming you.