Well, as for the card thinking your front right is the center, I wouldn't really worry about that. As long as you get sound from every speaker, then you're fine. Also, when you say "When I press test...", are you referring to the remote that comes with the speakers?
As far as the center and back left not having sound, check the wire connections on the back of the sub, and each individual speaker.
Also, make sure that any sound settings such as in the Creative Volume Panel, are all set to 5.1 surround.
BTW, mine is always set to DD PLII Music.