The latest version of the Microsoft Office 2004 for Mac Resource Kit gives mention to Acronis Files Connect (formerly ExtremeZ-IP) File Server as an alternative to Microsoft's Services for Macintosh (SFM).
This Resource Kit document covers all aspects of using Microsoft Office 2004 for Mac in a corporate environment. Included are details on utilizing an AFP server as an installation file source and a user home folder location. As an alternative to Services for Macintosh (SFM), which is noted to not support session reconnect and to have limitations on file name length, Acronis Files Connect File Server is mentioned. This Resource Kit should be a useful reference for anyone using Microsoft Office 2004 for Mac or planning a corporate deployment.