In Excel 2003 there used to be a command that I added to my toolbar that was called Address (if I remember correctly) and it would show the fully-qualified network path to the f
In Win7 (and Vista I think), you can Shift+Right Click the file in question and select Copy as path to get the full network path. Note: if the shared drive is mapped to a letter, you will get that path instead (ie: X:\someguy\somefile.xls)