id3-tags

I use i-tunes on 3 different computers (imac, macbook and mac mini), in three different places. It is very important to me that all the libraries are exactly the same. Is it possible to export the id3-tag info so iI can inplement it in all my computers? I've tried all i could find on the apple support site. (the most important info I want to export is the appreciation 1 to 5 stars info)