You have to save the attachment to the file system and open it from there.
See http://www.slovaktech.com/code_samples.htm#StripAttachments for code to
save the attachments from selected email items for the first part. Then you
need to access the saved file and open it. I'd probably use Windows
scripting's FileSystemObject for that and open the file as a Stream object
to read it.

Signature
Ken Slovak
[MVP - Outlook]
http://www.slovaktech.com
Author: Absolute Beginner's Guide to Microsoft Office Outlook 2003
Reminder Manager, Extended Reminders, Attachment Options
http://www.slovaktech.com/products.htm
> I would like to create a macro to open an attachment, and copy & paste the
> text into the body of the email for searchability.
[quoted text clipped - 3 lines]
> Thanks
> Jenn