Welcome to the world of GreekChat Amanda. As Heather said it can be addicting but it is a lot of fun.
Regarding the Alum chapter for the Detroit Area. Have you contacted CO to let them know you are interested in one if it starts up. They may be able to put you in contact with other Alum in the area that are interested too. You may be able to get in contact with CO through the national website at
www.phisigmasigma.org. They've really updated it this past year if you have checked it out yet.
Carolyn