nodes, textures and GLSL

ok so i got the apricot blender 2.6 with GLSL.
but when i went to apply nodes it took the textures off te object i was adding nodes to. i know its possible to have nodes with a texture, cuz ive seen it before. does anybody know why blender isn’t letting me ad textures and nodes?

WOW, Blender 2.6 !!! I thought they didn’t finished 2.5, what’s up Ton? !! why tittyboy512 has Blender 2.6 and the rest of humans we have to wait for 2.5, that’s not fair enough.