How do I install gas logs into my fireplace?

Yes it unscrews ccw. First, Very Important:be sure the gas c*ck is in the full off position. If it is rusted on, Iron pipe it could be diffcult to break loose. You will need two pipe wrenches and some pressure on it. Once you break the first thread it will unscrew. After removing clean the threads good with a wire brush.  Second, There should be a round punched hole that you have to knock out. You can use a screwdriver and hammer to tap and break it loose to remove. Third, make sure to use a good quality pipe dope on all joints, not tefflon tape. Once you are through, mix up some water and dish soap in a spray bottle, turn on the gas and spray all connections and joints and check for leaks before firing the logs. Good luck!