   OpenGL 2 SDK
  Where can I get the SDK for OpenGL 2?  So I got the glext.h file, and included it in the project but I get link errors.Also, I must define this:GL_GLEXT_PROTOTYPESHelp, thanks.   
  theres no sdk as such read this forums faq, goto www.opengl.org also and read the faq   ;  You should use the Glee library see forum faq   ;  Or try GLEW, http://glew.sourceforge.net/HTH   ;  hey, compile this OpenGL2 SDK to a static library and link to it.  It loads the extensions for you.   