Downloading libraries with buildout

[George Lee]

I want to set up my python/Zope/Plone environment to use

  reportlab
  renderPM (a reportlab add-on)
  dateutil

I can download them into python, but is this the sort of thing that buildout is
good for -- so that I can slap these into my buildout.cfg somehow to make sure
I'm using a consistent environment?

If so, how would I do this?

Thanks for all the help people have given so far about buildout!

Peace,
George