Script to create signature in Entourage X & 2004 from HTML template

I’m trying to mimic the behavior in Microsoft Outlook that allows you to create a signature from a template file in Entourage X and 2004. This doesn’t seem to be possible but wanted to hear it from the experts. From my research, I’ve found that:

  1. Entourage doesn’t support what they refer to as “complex” HTML, which my html template has, albeit just an image and href tag.
  2. Entourage does not allow you to create a signature from a template file.

I came across some workarounds like creating a message in Word and then sending an email from there, which is not acceptable in my case.

Can anyone offer any suggestions?

Thanks.