Followup questions...

I'm trying to learn from Rob's tutorial here (http://www.wekeroad.com/CSKB3_Intro9.html) and I think I'm doing pretty well... but several of the folders from the CSK_2_Beta3 download are unaccounted for..... what am I supposed to do with the three folders that don't have a .csproj file (3rd Party, API Wrapper, and Commerce.ShippingProvider)???  Where do I put the project that I got when I added the Commerce.PaymentProvider.csproj... it's called Commerce.PayPal???