Spam avoidance Can I get Outlook to recognise GIF's (as opposed to text) and delete?

Most of the spam I receive contains it's message as part of a GIF - is it possible for Outlook to recognise these messages (as opposed to text only) so I can delete them automatically?

I use Outlook 2003 and it has a built in junk filter that gets updated as part of my office updates every-so-often. This picks out all this 'junk' emails and copies them to a junk folder. Not sure if that's available on older versions of Outlook though.