Rebuild Solution/Build Solution is a global override that forces VS.NET
to rebuild everything; you cannot cancel this behavior.
Instead, assign the dependancies on all your other projects to force
only the particular projects you wish to be built in your solution as a
group when you build only a selected project.
For each project, goto the VS.NET main menubar and select:
project->project dependancies and project->project build order
Checkmark the listed projects you want to have built when you build a
particular project - do not checkmark the project you wish to exclude.
After this, whenever you build a project in the solution, only the
projects you have checkmarked will be built.