I Am Replacing A Light Fixture In My House It Has Two Separate Wall Switches The Wires In The Ceiling Are Red And Black The New Light Has White And Black The Ground Was Not Used What Do I Do?

There should be a red black and a white wire. Are you sure you are not overlooking the white wire. The white wire is the neutral and is the path back to the power source to complete the circuit. You may have to to take the light off the cieling or wall, where ever it is mounted and look in there really good. Sometimes there are multiple circuits in one junction box and that makes it really hard to see. Black and red wires are usually designated as hot or power wires. If you are certain you have no white wire then put a meter across the red and black and see if you get 120 or so volts. If you dont then you need to run a nuetral wire from the same circuit branch that is feeding that light.