Hi Gary,

Here's some sample code.  This code is defined within a command handler
(associated with MenuCommand) in my ProjectNode derived class, which is
executed after the hierarchy has been fully built and visualized.  This code
is written in C#, primarily against the interop assemblies.

IVsSolution solution =
Microsoft.VisualStudio.Shell.Package.GetGlobalService(typeof(SVsSolution)) as
IVsSolution;
if (solution != null)
{
    IVsHierarchy hierarchy1;
    EnvDTE.Project project = (EnvDTE.Project) GetAutomationObject();
    string uniqueName = project.UniqueName;
    int hr = solution.GetProjectOfUniqueName(uniqueName, out hierarchy1);
              //hr == VSConstants.E_FAIL
}

The following code sample was also run to enumerate the number of projects
(hierarchies) in the solution and to determine the project name of each
hierarchy.  After running the following code, 1 project hierarchy is returned
in the solution, and the project.uniquename matches the value passed into
GetProjectofUniqueName above.

Guid empty = new Guid();
IEnumHierarchies hierarchies;
hr = solution.GetProjectEnum((uint) __VSENUMPROJFLAGS.EPF_ALLPROJECTS, ref
empty, out hierarchies);

IVsHierarchy[] test = new IVsHierarchy[1];
while (hierarchies.Next(1, test, out fetched) == VSConstants.S_OK)
{
    object obj;
    hr = test[0].GetProperty(VSConstants.VSITEMID_ROOT,
(int)__VSHPROPID.VSHPROPID_ExtObject, out obj);
    EnvDTE.Project proj = (EnvDTE.Project)obj;
    System.Diagnostics.Trace.WriteLine(proj.UniqueName);
}

Notre