You know Service Pack 2 for Microsoft Office 2003 is out right?
If not you should fire up your browser and visit Microsoft Update website. There's an update awaiting for you to install. It's the
Service Pack 2 for Microsoft Office 2003. This update contained improvements to reliability, performance and stability, support for upgraded applications, and security improvements. Also it trashes junk emails because the update will now prevent HTML information from being accidentally viewed by rendering them in plain text only, and links are disabled - that's for your Outlook 2003 email client.