Incremental builds

[trailway]

Does anyone know if there is a way that I can pass a parameter to MSBuild which tells is to execute the UnmanagedRegistration target?

What I like to have is a "Make VS 2008" build step which builds only if required but always registers for COM interop if this was set in the project.

In order to understand this, I tried to just add an MSBuild build step with this target but executing it did not do the registration. I also tried setting the Platform and Configuration properties but that did not cut it as well. I'm thinking that the problem relates to the dependency machine but I am such a MSBuild newbie that the answer is not obvious to me.