Outlook 2007 Attachment problem

[Squeaky]

I recently upgraded to Office 2007. Previously in outlook 2003 I could send
an email to a co-worker, select ATTACH FILE, browse to a file on a shared
drive, then attach the file as a hyperlink. When my co-worker who received
the email could click on the link and open the file from the shared drive.
Since the upgrade the co-worker (who is still using Outlook 2003) can no
longer click the link because the file no longer shows up as a link. It shows
up as plain text. If she gets a link from my other co-workers using OL2003
she can open them just fine.

Any ideas?

Squeaky