How do I replace a Ceiling Fan with a Light Fixture?

Are there two switches at the doorway? If so. I will go on the limited information that you have provided: 1) Turn off the power to the light fixture. 2) Remove the two switches from the box. I'll be willing to bet you, that you will find one black, one red, one white and one bare wire in that box that is already attached the switches. The bare wire will be attached to the green screws on the switches, one black is attached to one switch, one red is attached to another switch, and the white wire is attached to both switches feeding the hot to them., while the black and red are the switch loop back to the fixture's box. If this information is wrong, please provide more info. Please feel free to email me directly if need be. Good luck in all you do and may God bless.

That would work wired to the black and the white wire if the light fixture had a pull chain to turn it off and on.If you want a wall switch to control the light,you need to change the wiring in the wall switch.Take the white wire and tie them together and cap them off.use the switch to make or break the hot wire(black)

You should really higher an electrician for this job. You need to determine where each wire goes. If these wires are not all on the same circuit (ie it was a splice point for another circuit, or its a multiwire, "shared neutral" circuit) you can get yourself into some real trouble miswiring it and cause a fire. This won't take a qualified electrician long to do and should cost anywhere from $40-$100.