I've updated my post Understanding PRESCAN.EXE Errors to include new errors and solutions. Read more here: http://blogs.technet.com/wbaer/archive/2006/12/22/prescan-errors-what-they-mean.aspx.
Excerpt: "“An outbound zone URL is configured for something other than the default zone on virtual server http://fabrikam/, and no default zone outbound URL is defined. This is not supported, and must be corrected before upgrading.”"
Le sujet reviens à la mode ces temps ci et de tous les cotés des frontiéres en plus . [Updated] voir
Many thanks for leaving the URL of this the same so that my earlier link to it iin the WSS FAQ sites s still valid.
Mike Walsh