yeah, there will be a sampler to load samples. with east west, its usally Kontak from Native Instruments.
So basically, you should add the VSTi (here it's kontakt) into the VST module of you host (cubase (press f11 i think), sonar, whatever). And trigger the different samples with midi signals. assign the output of a midi track to kontakt and you're done.
I bet it will sound awesome. Its their big new thing.
Have fun.