Move Multisite to local machine using XAMPP

Hi,

I'm having a huge problem and is desperate for help. I've tried to solve this for days but nothing seem to work. I followed this: tutorial and have been successful getting the main site to work. However none of the subsites/subdomains work ( I have a setup where i'm using both Multi Sites-plugin and Domain Mapping-plugin). How can i get the subsites/subdomains to work with XAMPP?