Here you have, ;o)

[Me]

From: "Bill Stewart" <bill.stewart at pobox.com>
> The trick with double extensions is that after
> Explorer or Outlook hides the .VBS, the user sees the ".JPG"
> and says "Oh, this is a picture, I'll click on it",
> instead of "Hmmm, this is something I don't recognize,
> better leave it alone."
> Similar tricks are used for .doc.vbs, .xls.vbs, .txt.vbs, etc.

Using Outlook Express 5 here, and nothing is hidden.  Both extensions
(.jpg.vbs) are shown on this attachment.