I have a 1997 ford taurus 6 cylinder that has a ''misfire'' diagnostics reading. It says cylinder six. I have changed all the spark plugs and wires and reset the code, the check engine light came back on. Where are the vacuum lines that I need to change for the next step in fixing the error?

Vacuum lines will not cause a specific cyl misfire. You may have a bad coil pack, or bad injector. You will need to make sure you have spark at the specific cyl listed for the misfire, and can test to see if you have injector pulse using a noid lite. Also, and good scan tool can show you live data, and allow you to watch the components operation, and give you a good starting point to determine the miss.