Ok I downloaded all 11 files for Americas army from the Nividia site. Ran it through winzip. now how do I install itand start playing

I have no specific knowledge of this game, but...

Were there any .txt files in the zip file? Often a file called readme.txt will give general instructions. It is safe to read any .txt file with notepad or wordpad.

Lacking any specific instructions, I would make a directory for all of the files, put them in it, and then run (double-click) any file with an extension of .exe. There isn't an install.exe is there? Just be ready with your task manger to kill it, if things start to get weird.