These sites may not be used as much as in the past, many groups are using Face Book instead. As far as mostly Confederate, you need to look up these groups... http://www.texas-rifles.org/index.html http://www.redriverbattalion.org/ http://www.6thtx.org/
If you have a FB account, look em up there. I believe the Texas Rifles are based out of, or close to the Houston area