Is there any way I can force download them or get them to actually download? Because it keeps telling me I need Pyffi and Python to download nifscripts and then it takes me to the those websites download page. The problem is that I have python 2.71 and pyffi, along with blender. So how do I get nifscripts to download? Please help, can't use blender without it.

http://www.tesnexus.com/downloads/file.php?id=12248

Go there, download the package for 2.49b, then install in the correct order (python, pyffi, blender, nif scripts, nifskope).
Thanks to lhammonds for putting this useful compilation together.

Thanks! It finally worked for me!