I voted "before the tribulation" because that is what the scriptures teach. The rapture is not the same as the second coming of Christ. If you believe those are one-in-the-same then of course that's after the great tribulation. 1 Corinthians 15:51-52; 1 Thessalonians 4:16-18; and Revelation 4, 5, 19 tells us that the rapture of the church of Christ takes place before the great tribulation. You may be interested in Dr. J. Vernon McGee's sermon on why the church of the Jesus Christ will not go through the tribulation: http://www.youtube.com/watch?v=BTm8WJkMKJw
Creationtruth, if the rapture is what 1 Thessalonians 4:16-18 is referring to, then it appears from that same passage that the rapture happens at the second coming. If the second coming happens at the end of the tribulation, then the rapture happens at the end of the tribulation.