dynamic paint

i was searching youtube in hopes of seeing how people made rain in blender. i did a tutorial on blenderguru which taught me how to do rain, but i kind of wanted the effect of rain hitting the ground. so anyways i found out about this thing called dynamic paint. this is just one of the tests i’m doing with this new program thing.

so anyways heres the test, its a a very simple particle system falling on a ground plane, and then the dynamic paint http://www.youtube.com/watch?v=j2j-g8pRArY

thats cool. how do you do that cause i want to know how to do that

you can check out this guys blog, hes the one who developed dynamic paint. http://www.miikahweb.com/en/blog/
theres a few tutorials and you can download the proper blender build for dynamic paint.