Go to the cell and use Insert | Hyperlink and a 'wizard' will appear to
assist you, you can create links to other places in your current workbook,
other files on your system or network, and even to places/documents on the
internet that are accessible.
The appropriate program will open up to display the document you've
hyperlinked to.

Now, if the document happens to be an Excel workbook, it will open as a
separate window in the same instance of Excel.

Hope this helps?

"Confused and dazed!" wrote:

Is there anyway to create a hyperlink in Excel(2003 sp2) to another document
that opens in a new window? Any help on this would really be appreciated.