title: Creating categories and sub-categories in Magento Extension
body: <p>I am new to Magento Extension Development and wondering which is the best way to create categories and sub-categories from within an extension. The Extension I am working on is synchronizing product-data from an ERP-System. The extension is operating with a System->Configuration Dialog which holds the data for the connection to the server (user/pwd/etc.) Now I am wondering, if it is better to connect via Ajax request or use a Soap call. Ajax seems very slow in this case for about 700 Products. So what do you suggest?</p>
  
  <p>Furthermore, I am a little stuck by creating categories and sub-categories. Is there simple way to do that. I found some stuff on creating a category and then use the ->move() function. Moreover I am wondering if the 'path' of the category is essential on creating sub-categories.</p>