hi, how do I wire ceiling fan/light -?fan has blk,white, blue and grd.=ceiling box has -red ,blk,white and grd.--wall box has 2 wire cable coming in- blk,white and grd.(power)and 3 wire going to fan-red, blk,whiteand grd. My sw-(lutron)fan/light combo-has red,yellow ,blk,green grd, Iam really confused please help --thanks kenpt39

At ceiling: red to blue, black to black, white to white, and green to green.
At switch box: I believe that switch is Black common, red is fan, and yellow is light, Verify.
If so, then at switch box, Yellow of control to red(light) wire, red of control to black(fan wire) and Black goes to line(Power in).Should have some diagram for switch to verify.

For future reference:

Ceiling fan wiring - Ceiling Fans N More