You'd have to see if there are iShares or Holdrs that trade approximations of the ones you're looking for. But liquidity is low in most of them.
They are defined but have not started trading yet. Checkout One Chicago's web site for a list of products: http://www.onechicago.com/030000_products/oc_030201.html I'm really looking forward to them... let's hope they catch on.