Anyone familiar with bumpmaps???

hey guys. anyone know if blender supports bump maps.
so if i had an image texture on, i could open a bump map to use for that object. currently i have got it only to work using the texture as the bumpmap. any help would be appriciated.
thanks guys

Blender uses textures to map bumps from the face normals. Add a texture in a seperate channel, turn off Col and turn on Nor (twice to invert). Works best with greyscale and you can use the Nor slider to set the value. Disp (displacement) works the same way but displaces the mesh on render and thus needs high subdivision or subsurf values to look good.

Also see the release notes of 2.36 to see supported Normal mapping.