Import and Export nif files

[OISteven]

Can anyone help me with this problem. I downloaded a tutorial guide from the Nexus (Blender-imp-exp_1_2). I have downloaded the programs that the tutorial recomends, which are;

 

Python 2.6.6 (32-bit)

PyFFI 2.1.10 (32-bit)

Blender 2.49b

Blender Nif Scripts 2.5.8

Nifskope 1.1.0-rc1

 

I have managed to install Blender and Nifskope without any problems but i am having difficulty with where to put the other 3 programs. If anyone has used these programs, could you explain to me where on my computer i should put these programs. I would love to be able to edit mesh and put them in Skyrim.