Yes, it's a stand alone program.

This is a good thing, as that way it can be used for many, many people, more then just for Poser people.
You can use it in Lightwave 3D, C4D, Max, Vue and so on.

A tip for those who use Vue too, or other instancing programs:
Make a few various "small" ivy objects and use those in your instancing software.

This will cut down greatly on memory issues, as the Ivy objects can eat up huge amounts of memory easily.

Anyway, hope you enjoy the tutorial :)
And have fun with Thomas' awesome program!

And Tim has a tutorial posted at the Ivy Gen site as well.

........md :)
BTW, I keep wanting to let you know how much I love your little quote thingy there, it's toooo funny, the catnip thing LOL