Quote: "Can I bumpmapping.fx and bumpmapping-specular.fx shaders without haveing to tweak them in tweakables section of .fx files?"
You could have edited that too.
Anyway, the answer to your question is probably "yes". Use one of the following commands in DBPro to set the values you want:
set effect constant float
set effect constant vector
set effect constant matrix
There are plenty of examples in the
Learning to write shaders sticky thread.
Quote: "Is there any good tutorials on how to make normal maps"
Search the Code Snippets and WIP boards - david w posted a demo a while back and I included some code to do it yourself in his thread.