Endnote Web embedded citations

I was interested to know if anyone knows of the compatibility of embedded citations. For example if I embed citations in a microsoft word document on a windows computer using a windows version of word will I be able to use it on a mac using 2004 or 2008? I was going to do this from EndNote Web but for others it may be useful to know about compatibility with EndNote more generally (and I have an old verision of EndNote I might use as well.)