FWIW I've just also just spent several hours trying the same thing with no success on a new, simple Revit 2009 project.
I watched a demonstration of the full IES package at a 'BIM Working Group' meeting, the other day and have a demo disk, but I started as IES suggest with the basic free Revit plug-in.
The white paper can be accessed from the IES<VE> menu in Revit by clicking the 'model guidance' option.
After carefully working through all the things that could be wrong the 'Set Model Properties' command on the IES toolbar still keeps returning an error to the effect that there are no bounded spaces in the project, even though this is just a single room with walls, floorslab and roof, all set as room bounding etc.
I've also trawled the IES forums, the IES FAQ list etc.
Ho hum.
IMHO the bewildering array of module options offered by IES and the lack of any pricing information is irritating enough but spending more time on transferring the project successfully into IES' product than actually modelling the design isn't going to win it many friends among Revit Architecture users soon, or at all.
It all feels unfinished - at least from a Revit user's perspective. Maybe the Sketchup version of the plug-in is a better bet?
There was speculation at the event I attended about what Autodesk was going to do with Ecotect, recently purchased. Maybe some proper integration with such as Revit?
edit/ PS - the Revit plug-in doesn't seem to work with Revit 64