(I think we could do with a Team Foundation Server Category by the way)

Using TSF2010. We have a project in a collection that really should be a SUB-project of one of the other projects of that collection.

So far, all I see for moving projects is the (complicated) ability to split a project.

Is there a way to simply or not so simply make an existing project into a sub-project of (move it under) another project?