nothing change when i add a bumped specular or bumped diffuse shader

I tried all posible ways to make it work but nothing(making new material for the game obj and tried different texture tipes - png,jpg,bmp,tga.watched tutorials 4 or 5 times :(()...and i even went googling around for my video card info..and it has pixel and vertex shader 2.0 and the directx has pixel and vertex 3.0 idk iff thats the problem... need some answers pls ...Thanx .

This is a vague question, but from what I have taken from it you are simply unable to see the result of applied normal maps to your meshes.

I am taking a shot in the dark here because there could be any number of things wrong, but to start:

Normal maps ("Bump maps" in Unity) require the presence of a light, where as to say that they do not give the expected visual feedback with only the scene's default ambient lighting. I suggest just dropping in a directional light and angling its pitch something like 45 degrees downwards.

If that doesn't work it could be any number of configuration problems.

Note: It is also important to always make sure your graphics card's driver is up-to-date.

Cheers,

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Do you have a light above the object you applied a bump too?