The Texans franchise replaced the Houston Oilers, who moved to Tennessee and became the Titans.
They have always been the Houston Texans. There were teams in Houston prior to the Texans, in the NFL (and AFL) the Houston Oiler (now the Tenneessee Titans). And in the USFL the Houston Gamblers.
The Texans are in the AFC South...they are not ON any conference.
NFL Follow Your Team Texans - 2007 Houston Texans Road to 2008 was released on: USA: August 2008
NFL Follow Your Team Texans - 2007 was released on: USA: December 2007
NFL Follow Your Team Texans - 2007 Week 3 Jaguars at Texans Game Highlights was released on: USA: September 2009
NFL Follow Your Team Texans - 2007 Week 4 Texans at Jaguars Game Highlights was released on: USA: September 2008
NFL Follow Your Team Texans - 2007 Week 12 Colts at Texans Game Highlights was released on: USA: November 2009
NFL Follow Your Team Texans - 2007 Week 16 Texans at Colts Game Highlights was released on: USA: December 2007
NFL Follow Your Team Texans - 2007 Week 4 Raiders at Texans Game Highlights was released on: USA: October 2009
NFL Follow Your Team Texans - 2007 Week 10 Ravens at Texans Game Highlights was released on: USA: November 2008
NFL Follow Your Team Texans - 2007 Week 16 Texans at Dolphins Game Highlights was released on: USA: December 2009