For wordpress2zangetsu:

 - Before start you must get your old blog history as XML(RSS).
 - Save the XML file as "rss.xml" in your root directory which 
   includes "zangetsu" dir.
 - Copy the wordpress2zangetsu.py to the same directory above
 - Run this;
   
   export DJANGO_SETTINGS_MODULE=zangetsu.settings
 
 - And Finally run the script
   
   python wordpress2zangetsu.py
   
 - Thats all.