Hello,
In your case, the Word Macro virus does all it's damage in Microsoft Word -- and it is on a different layer than the OS. A Macro virus should not affect your OS X install, unless you open Word and let it run it's course.
As you are using OS X, unless you went into the network control panel and moved things off the defaults, you are running a software firewall. That is a good thing.
To locate a nice free OS X antivirus package, look at ClamAV. It works with linux and OS X, and is free, and they are responsive. Check that package out to scan your drives, and make sure things are OK. You will notice that ClamAV doesn't have the usual charm of an OS X program -- that's ok, it is still configurable -- but it will feel a bit different, as it is designed by linux people.
As for your OS 9 friend, I have been out of OS 9 for too long now, and have not kept track of antivirus for the platform.
As for your other issue, please start a new thread about the problem with fontbook.
Christian