build order for C#,net windows application

Question

 I basically have a C#.net 2008 solution that I need to make changes to. I am
trying to determine how this solution (.sln file) is setup. There is no
documentation. When I compile this application is debug mode, it needs lots of files. If I
compile the .sln file in 'release' mode, the application compiles with a few
warnings.
Basically I am trying to determine how this .sln is setup before I make
any changes to it.