Figured I should post this here:
http://www.zbrush.info/site/index.php/Zbrush_to_Blender_Guide
I started to make a wiki guide for Blender & Zbrush users. It mainly goes over how to import & export between the programs.
To do the Normal mapping in Blender you’ll have to get a CVS build until Blender 2.43 is out. You can find the builds here: http://www.blender3d.org/forum/viewforum.php?f=18&sid=cc26b897ab915293050465e23d0be323