In newer homes around the Dallas area, a third wire will probably be coiled around a blue screw on the original switch. This wire is known as the ground wire, and it will need to be reattached to the new switch. If you own an older home in the Metroplex, the ground wire may NOT be available to reconnect.
All of this means that 'zap' is a very possible outcome! Not appealing sounding? How about calling the ultimate handyman electricians? That is Home Pro Contractors of Dallas. Now they know their way around a fixture or light switch. You won’t believe all that Home Pro Contractors do. Just google homeprocontracting.com. Their 24 hour number is (214) 886-3326.