Thanks everyone for your help. Your answers have at least let me know not to invest a whole lot of money into software for virtual tours. Maybe I will use one of the services with a monthly fee and see how it goes on a month-to-month basis. Thanks to your advice, I contacted the Houston Area Realtors Association and will see where that leads me.
MVPs or 'Most Valuable Players' are key Trulia Voices members who have been contributing high-quality content throughout 2008 and providing valuable advice to consumers and real estate professionals.