Experimental Physics and
Industrial Control System

Hello,
    Presently i am working on system already installed EPICS.  I started and learning with developing computer serial port driver. 
Now i want to establish another system.  I tried to install epics extension and modules.  But can't understand how to install extension and modules.

I downloaded extensionsTop_20120904.tar.gz, and extensionsConfigure_20070703.tar.gz  but don't know what to do with this.
I also downloaded asyn4-21.tar.gz, autosave_R5-1.tar.gz ,  camonitor_cvs.tar.gz ,  StreamDevice-2-6.tgz , std_R3-2.tar.gz   etc but don't know how to install it ...
Is it enough to just untar all these modules?

Thank you