I tried to rotate it with cycles and nodes, it works, but I am not yet an experienced in making materials with nodes in cycles, so I would prefer to stay in blender render, and if possible rotate the HDR background image as it is done with nodes in cycles, but with the Blender Render. I cant find a way to do it. thanks in advance guys. sorry my bad english.
You can rotate the HDR background image in Blender Render (Internal render engine) by using the Mapping Size property in the Texture panel. Use the X axis if you have a normal setup and increment or decrement from the default 1.00 setting. You range of change is limited to +/- .9 before you will receive distortion.