Chrome Extention - image viewer

Hi I allready have a working FIREFOX extention and I want to build the save for GOOGLE CHROME BROWSER. The extention will work with our BACKEND SERVER. User need to do login to our services (using POST to the backend). The extantion first screen presents a list of Services. when user hit a service he get a list of albums. when pressing a directory user get a photos gallery (very simple just show the photos). that's the basic idea. I will send the Firefox addon + full description to you.