There is a cutdown version of Microcosm included in Poser 11.

Also, although RDNA is gone, it was bought by DAZ. If you have a DAZ account, and if you have your email address and the order number from when you bought it, it may be worth shooting an email to DAZ asking if you could get it. They supposedly added people's RDNA orders to their DAZ order history (didn't happen with mine I must admit) so they may have a record of it.