Many people have been asking about Windows SharePoint Services and Workflow and how this will work with SBS 2003.  While I can not say how WSS v3 will be supported on SBS, the issue is likely to be one of the wizards and fax tools no working rather than the WSS v3 itself not working.  One of the good features of WSS is the new workflow features that are available.  From within the document it states:

Many kinds of processes in many different kinds of organizations can benefit from automated support for human workflow. Examples include:

• Approval: A common aspect of human-oriented business processes is the need to get approval from multiple participants. What’s being approved can vary widely, ranging from a Word document containing next year’s marketing plan to an expense report from a trip to a conference. In every case, some number of people must review the information, perhaps appending comments, then indicate approval or rejection.
• Coordinating group efforts: Whether it’s preparing a response to an RFP, managing the translation of a document into one or more languages, or something else, many processes require people to work together in an organized way. By defining the steps of the process in an automated workflow, the group’s work can be made more efficient and the process itself more predictable.
• Issue tracking: Many business processes generate a list of outstanding issues. An automated workflow can be used to maintain that list, assign issues to the people capable of resolving them, and track the status of that resolution.

Rather than me continuing to rattle on, it might be worth heading over to Chris's blog on Workflow and WSS to find out more.  Over the next couple of weeks I will get WSS up and running on SBS and find out what works and breaks.

ttfn

David