How to use Detailsprites?

Hey guys, I downloaded a detail sprite, but I dont know how to install/use them… I got one detail_suomi_2.vbsp, a detailsprites.vmt and a detailsprites.vtf.
Where should I put these 3 files? And how can I add them into my grass? I map with CSS.
Help would be greatly appreciated!

detail_suomi_2.vbsp goes in counterstrike source\cstrike
detailsprites.vmt and .vtf go in cstrike\material\detail

Do map>map properties
Detail material file and detail.vbsp file

Okay, I got all this, but how to put it on ur nature/blenddirtgrass001b?

%detailprop parameter.

How do you mean exactly? :<

Well I mean by not liking somebody.

Just kiding.
Texture



LightmappedGeneric
{
Blah shit here
%detailprop "**forest_floor_01**"
}

Detail.vbsp



detail
{
	
	**forest_floor_01**
	//for Ep2
	{
		"density" "450.0"

		Group1
		{
			"alpha" "0"
			Model1
			// Position 5 in sheet
...

[editline]02:57PM[/editline]

See the correlation?