i am upgrading my pc to windows 7 from xp, but i'm not sure whether any files i create using ms word, publisher etc will be compatible with ms office on xp. my schools computers operate on xp, and as i used to run vista i know there can be problems getting a file created on one to work with another. but is it the same for windows 7. do i just have to save it as a certain file type on one for it to work with the other?