halogen lights are made to be very bright, some lights are not made for dimmers, like flourescent, im not suer what power your bulb lights are , 60w 100w ect , try getting a lower power bulb than you are useing,and see how you get on , if the dimmer switch is not working with halogen, put the normal switch back on , and try it on the lowest W bulb you can get for your light fitting.
j, February 2011