Actually it's a real loose-knit group of folks, the heart of which are a couple of home builders, who are also the primary builders of the majority of local trails here in Raleigh. We're casually known as the "Cooper Group", since one of the guys who brought us all together is affectionately known as "Cooper".
Anyway, we don't have a website or anything, but I can certainly add your e-mail address to our "ride list". We ride every Wednesday evening and Sunday morning, year-round, as well as many weekday evenings and Saturdays. Just PM me if you want to be added to the list; that way we can notify you of where the rides are, as well as any special rides or activities we do. Also, here are the links to a couple of the race series that my husband and I are involved with this year (we're doing the downhill stuff, but Cane Creek has a lot of cross-country, too).
http://www.madhra.com
http://www.canecreek.com
"You can't frighten me. I'm a coward. I'm scared all the time." -- Arnold Rimmer