This new white paper has just been released. Download here.
The paper is required reading for anyone who needs to install Microsoft Office Small Business Accounting 2006 (aka SBA) on SBS. The general recommendation is still to put it on a workstation if you possibly can, but there is a recognition that this is not always possible.
The basic steps took me about 15 minutes in a VPC during review of this document (and a lot of that was because I forced myself to actually read the steps rather than skimming).