Wolf
100% Texan
According to the NFL future scheduling rotation plan, which can be found on page 17 of the 2011 edition of the NFL Record an Fact Book, the AFC South will play the AFC East in its intraconference divisional matchups and the NFC North in its interconference divisional matchups.
Since the Texans finished in first place in the AFC South, they'll also get to play the first place teams from the AFC North and AFC West, aka the 'first place schedule.'
And of course, the Texans will play each of its AFC South opponents twice home-and-away as they do every season.
Home and away locations for other opponents is determined by rotation, i.e., the Texans last played the NFC North in 2008 and the AFC East in 2009 so take a look at the sites where those games were played and reverse them for 2012.
Exact dates and times won't be known until the league schedule is released - typically in April.
http://www.examiner.com/houston-texans-in-houston/texans-2012-opponents-determined