Custom Particle effects - Getting them on the client?

[Teddi]

I've been experimenting with the -tools parameter of the source engine (Namely in Gmod) and I've been making some fun custom particle effects and whatsnot. However, I was planning on using some in a gamemode of mine and even though the pcf downloads on to the client, it fails to load for them. I suspect that I'm going about in the wrong fashion with this, but can anyone enlighten me with it?