I’ve just completed an installation of Office SharePoint Server 2007 and I encountered a problem when I was trying to add a Shared Service Provider to the new farm. The documentation states that one should create a web application to host the SSP and when you create your SSP you just select the web app that you have. But in my case the list of web apps were empty, no matter of how many web apps I created.

So I turned to stsadm to create a SSP instead, wich worked perfectly. Just run stsadm.exe -o createssp to get a list of options for creating your SSP.