Help with error opening Word attachments in Outlook 2003

I work at a Help Desk and trying to fix a user’s Outlook attachment error. If Word is open, she double-clicks the Word attachment and it opens in Word. If Word is not already running, when she double-clicks the attachment and then Word opens, but the document does not open. If you then minimize Word, there is an Outlook error message visible “The System can not find the file specified”.

I have tried tweaking the File Association settings for .doc, the Open action per the advice at http://www.techsupportforum.com/microsoft-support/microsoft-office-support/193035-solved-quot-system-cannot-find-file-specified-quot-when-opening-doc-attachment-olk.html

but this did not help.

Any suggestions would be welcome.