Installation:
Extract the folder(s) of this rar into <steamfolder>/steamapps/<account>/<game>/<abbreviation>/

Example: c:\documents\steam\steamapps\kevin1337\counter-strike source\cstrike\
Example: c:\documents\steam\steamapps\kevin1337\team-fortress 2\tf\



Have fun!




ADDITIONAL INFO REGARDING PARTICLES:

If you extract the contents of this rar and get asked whether you want to
replace particles/particles_manifest.txt , click NO.

Instead, open your counter-strike folder, open cstrike, open particles, open
the particles manifest and add this line between the others:

        "file"          "particles/acidwaterfx.pcf"


Sorry for the inconvenience, that's the only way there is to add custom particles.