[Cura 15.06.02]

I installed 15.06.02 because I have a Windows computer. However, when I opened the program for the first time. My Printrbot Simple Metal was not on the list of printers, to be selected. How can I use this current version without my printer being on that list?

[Retraction and Combing , Yes or No]

I am new using Cura 15.02.1, I also use a Printrbot Simple Metal with a heated bed. I do not understand Retraction and Combing. Should Retraction be used, If so what settings are preferred? Do I need to use Combing, if so what settings are preferred?