[Cheeseh]

Actually I think I#ve got it, I think you've got to get the Server Effects Interface :

IEffects *g_pEffects = NULL;

..

g_pEffects = (IEffects* )interfaceFactory(IEFFECTS_INTERFACE_VERSION,NULL) ;

...

g_pEffects->Beam(..,..);

Haven't tried it yet though but it compiles okay

Edit:

Arrrrgh.. Okay the interfaceFactory returns NULL.. :@