shaders not supported after python install

Before, I worked with blender and my renders were coming out fine. Then I installed python and I got this message:
Detected GL_ARB_texture_env_combine
Detected GL_ARB_texture_cube_map
Detected GL_ARB_multitexture
Detected GL_ARB_vertex_program
Detected GL_ARB_depth_texture
Detected GL_EXT_seperate_specular_color
shaders not supported!
My renders were missing chunks of the models. I don’t think I have a graphics card, my machine is stock. I am running win vista on intel dual core pentium, blender 2.47 and python 2.5.2. Do I have to get a graphics card? Where do I look to see if I do have one? I tried with no luck. Is there anything to try before I fork out the money for a new card?