I have Office 2011 for Mac, which I think is a very decent Office suite, but I have an issue. When I save a document and try and opening it in Office 2003 for Windows (which my college uses), it just won't open. This happens even if I save it in an old .doc format. Is there any way I can sort this? I'm having to use NeoOffice at the moment and it's utterly horrible, quite frankly. Thanks!