davidcahill wrote on Sep 3^rd, 2012 at 7:18pm:

Can someone here tell me what I need to upgrade my 737 in FSX. Which one do I start with......

Hi, David and welcome to the forums.  :)

I don't know if I got your question correctly, but for the FSX 737 (which is a 737-800) there are some freeware upgrades which add some features. For the 737-200 we are using in this thread, you have to look into the Captain Sim shop. http://www.captainsim.com/products/x737/ You will need the base pack to receive a full plane. The other parts then add some variants.