   GLSL extension problem
  hey,I just queried all my OGL details and it says I'm running on version 2.1.8193 and glGetString(GL_EXTENSIONS) put out GL_ARB_shader_texture_lod.But once I try to compile a fragment shader with this in its header:#version 120#extension GL_ARB_shader_texture_lod : requirethe shaderInfoLog tells me that this extension isn't supported. Am I doing sth wrong?   
  Your code is fine.It works fine for me on a Gf 8600 with an old driver and from what I see in the spec, that's how it should be used. You can even use #version 110 with this extension.   