To get a Command and Conquuer style of game developed....
First of all it does not matter if its like C&C, Warcraft, Age of Empires or the Earth series.
What matters more it to get people with knowlege about RTS games at all.
I worked on an RTS Project, that costed 8 Million Euros, and was a big flop...
If you want to get into RTS, you should first look for good Programmers, that can handle such a Project.
If this is cleared you have to look for several Artists, and Gamedesigners.
And most importantly about the fininacing of the Project.
For free! you will not get people with the skills to make a serious RTS, as this
is a Project lasting over 2 Year development, fulltime work.
Look at
www.RTSMaker.com in some months
as I am working on a "easy to handle" sollution for hobby Gamedesigners.