Doesn't make sense to me. Why are you scanning the emails? Do you have an email address from which you CAN send emails? It sounds like you are using Outlook (or Outlook Express) so you should be able to simply forward the messages, choosing to use an account other than Incredimail.
If you scan your emails you'll get image files which will be viewed in Fax Viewer. If you open Word and insert the images into a document, THEN you'll get a "normal word doc". But what's the point?
If you send the images as attachments (that open in Fax Viewer) then eBay can view them, but they may choose not to open image files for security reasons, wondering why on earth you've forwarded emails that way!