That is the TribesNext_rc2a.exe right? Do I also need to run the TribesNext_rc1a.exe?
The RC2 patch is all you need (until RC3 comes out, of course!)
To run it as a LAN only server, use the "-nologin" flag in the server shortcut.
Also, windows search pretty much fails in regards to .cs files, unless you tweak settings (if I remember correctly), and the TribesNext files are packaged into the T2CSRI.vl2 file in your base folder.