In case you aren't aware, Forged Alliance
is a stand-alone game which does *not* require the original Supreme Commander
to be installed.
I've spent a lot of time with both versions, and I can assure you: unless you're really interested in playing through the mediocre-to-poor campaign missions in the original [/i]SupCom[/i], you're going to find yourself sticking exclusively with FA
. I recommend skipping the original game.