Excel linked files

[Gert]

I've created a word document with some links to tables and graphs from an
excel file. This word document is transferd to a dot file to generate a new
report. To share this with a collegue I must save this on a SharePoint portal.
If I want to update the links and direct them to the location on the
SharePoint where the xls is saved I recieve an error that you cannot use
internet adresses to point to the document.

Is there any way I can solve this issue. I want the word document to
automatically get the info from the xls when both are saved on a portal.