Here is a tutorial on using Motiva COLIMO 1.7, a realtime postproduction tool with native Vray 2.4 support.
RealPerception OFX Plugin Pack
Motiva have updated their RealPerception OFX plugin pack, and are offering a 25% discount until July 25th.
Making Gravel with MultiScatter
Alexey Duk has posted a tutorial on how to create gravel with VrayPattern and MultiScatter in 3ds Max.