Word docs and external data sources

I have a word document which contains graphs.

The graphs are taken from an Excel document. They were cut and pasted into word.

When you double click on the graph it opens the excel spreadsheet, as it was when the graph was cut and pasted the graph.

However, I have since updated the spreadsheet, the graphs have updated themselves in excel but word still shows the old data.

How can I tell work to use the updated spreadsheet, without cuting and pasting the multitude of graphs again? Surely there must be a way to change the datasource for the graphs within Word.

any ideas?

Cheers

kedge