The American Christian Fiction Writers have at least three chapters in Texas, which is in the Southwest Zone.
CENTEX Chaper in Round Rock http://home.austin.rr.com/linharris/centex.html
ALAMO City Christian Fiction Writers in San Antonio
DFW Ready Writers in Dallas / Fort Worth
Get furher info at http://www.acfw.com/chapters.shtml
They've also got reviews in several genre
Chick Lit/Lady Lit/Mom Lit