Here are links to the websites of other paranormal groups around the country.  Feel free to request an exchange of links for your group if it isn't listed here.

http://tnparanormal.com/ -- A Christian based group that has been doing investigations since 2005. Very good website, the founder also works with Haunted Voices, focused on EVP's.

http://www.middletennesseeghostchasers.com/news.php

-- based in Clarksville, TN, this group has been doing investigations since 1999. They've done a lot of investigations and have a lot of experience in the field. You'll find some very helpful teaching videos on their site as well. Be sure to check them out.

http://www.clarksvilleghosthunters.com/news.php 

-- this is another group located in Clarksville, TN.  They focus strictly on using instruments to investigate any paranormal activity, and are able to travel throughout the Tennessee area and some of Kentucky. 

http://www.the-atlantic-paranormal-society.com -- If you haven't heard of TAPS, then I have to ask where have you been! TAPS brought some sanity to the field of ghost hunting in general, via their program "Ghost Hunters" on SciFi. They have been conducting investigations for over eleven years, and their techniques have become a standard operating procedure for many other groups today.

http://www.gcghosthunters.com/index.html -- A good group based in the Texas area, they have posted several good videos on Youtube of their investigations. 

http://www.myspace.com/nascarfan820 -- North Texas Paranormal Investigations Society, this is their MySpace website.