The Pentagram has to be one of the most misunderstood symbol in history. For many hundreds of years it has come to the vast majority of people to represent the devil and devil worship, and is often thought to be the design drawn on the ground to aid in raising demons. The reason for this misunderstanding is simply that this is what Wiccans were seen as for many hundreds of years - devil worshippers. This is a real pity, because the pentagram was not intended this way, and Wicca has nothing to do with evil.
Each point of the pentagram represents an element - Fire, Water, Air and Earth, and the final, topmost point represents Spirit.
I'm not going to say much more on the subject, its just a little point that needed clearing up =)