Yes, I use CO2 in my 45 and 30 gallon and dose a modified EI method. I use AH Supply CFL DIY fixtures on my tanks.
You just missed the Annual Plant Auction last month; 500 plants from common to really rare including Erios, Syngonanthus, Pogostemon, and a multitude of others. In fall 2011 we had Tom Barr as a speaker, Karen Randall (twice), and next fall Christel Kasselmann!
There is a 'mini-auction' at the end of every meeting with plants and fish provided by GSAS members. Check out GSAS.org when you get a chance.