With 3ds max 2014 we now finaly have the box #2 and #3 from Orbaz integrated into pflow, this makes pflow actually useful. 3ds max 2013 had the box#2 and the lesser worthy tools in box#3 with it's subscription and to get the full box#3 aka the operators you had to have the full suite to be able to play around with the awesome and some what complex data operators. And 3ds max 2012 and lower needed to have the actual box#2 , box#3 from Orbaz. The names differs from the plugin to the integrated version but they are pretty much the same folks.
Like i have said in a previous article, when trying to figure out a solution for your particle setup think simple. It's easy to get overly exited about your particle system and then figure our a super complex setup to make it work but like i said, think simple.