ok i might have a solution for you poor blokes with the 7500 or some card tahts below OpenGL 1.4 requirements. Ive heard about this software that emulates different cards on your machine so you can GET the OpenGL drivers. Again this is emulation, which equals instability so, try at your own risk. Ive heard of this and therefore dont know much about it so if it turns out to be false or something please dont flame me. You can see another forum here where they talk about something called a "Glide Wrapper" or 3DFX emulation and other emulations for video cards. Heres the link:
http://forums.devhardware.com/archive/t-29079/3dfx-emulation
Again i also used this software before but dont remeber what it is called and am currently trying to google a name through. I remember when i was trying to play Prince of Persia The Sands of Time and i didnt have a pixel shader card so i used this emulator that tricked the game into thinking i do have pixel shaders.