Do you currently have FMS11 and a running website built with Site Assistant (FM11)? If so, these may be able to be ported to FMServer 12.
The Site Assistants are deprecated (removed) from FMServer 12 & FMServer 12 Advanced.
If your site is not very complex, you may investigate IWP Instant Web Publishing with FMServer 12 Advanced.
And/or you can find many php developers to work on the site for you. If they aren't familiar with FM & php, show them the PDF you have on CWP.
-- sent from my iPhone4 --