Hierarchical Clustering & Dendrogram

Hi,

Is there any way to mark the clusters calculated in a dendrogram/hierarchical cluster.  For example I have a data set with 13 features and ~4000 datapoints and the analysis shows some of the features reduce the group to 4 clusters.  Can I somehow mark them?

On a side note, I think the implementation of dendrogram and clustering is a bit odd.  The usual convention to show data is to have the rows represent data points and the columns the feature labels.  In the dentogram analysis you need to transpose the matrix so that the features are now the data points.  Additionally it would be nice to allow the use of dimension labels as the feature text instead of having to create a separate text wave.

Andy