Analysis Services Projects - Deploying from within an MSI
Describes how to deploy the analysis services project dynamically.
The issue is that when you create a web setup project, there's no intuitive interface to allow you to do such a deployment as part of your installation.
Solution? Deploy the analysis services project dynamically.
The first thing you need to do, if you haven't done it already, is to create a new class library to handle all these sorts of custom tasks during your installation.