I could be wrong on this, but I thought all LCDs are locked into 60Hz since the technology doesn't exhibit the flicker associated with low refresh rates and CRT monitors.
I'm guessing the OP is thinking about what seems to be selling LCD TV's these days. LCD TV's used to be 60Hz...then they went 120Hz...now I think the top of the line LCD TV's are 240Hz.
With the benefit being smoother action.
- Nick
I did not know that. Learn something new every day.