Outlook XP SPAM block

I need a little assistance. I need to set up an Outlook rule for a user that is getting large amounts of SPAM. Our corporate e-mail filters aren't getting the all of the SPAM that is coming his way. What I would like to do is to block all e-mail that isn't from our domain (like @company.com) except for his home address. My thoughts are to move all incoming messages to a folder called temp and then move all local domain messages or his home messages back to the inbox. I can't see any options to move all e-mails, or an option to move e-mails that are NOT from @company.com. Commercial SPAM blockers are not an option. Any thoughts or ideas would be appreciated.

What's a signature? Oh, those words that show up after all my comments? I don't need one of those!