Wow, a 21 year old thread is resurrected! Hallelujah!
It seems very unlikely to me that the magi/starguide event ever happened. It probably was written in much later to make it appear that Jesus' birth was accompanied by a celestial event. This was a common artifice in biographies of famous people. There have been some who have believed it was based on a real celestial event, an eclipse or a comet maybe, which was then used to support the mythology.