Trouble importing MSP Externals

1stly i'm new to max and this is probably obvious,

as an example i wish to use the OSCroute~ external from CNMAT,

i have downloaded it and all it's cousins, i have told file preferences where this folder is with the title CNMAT,

in a new patcher, in the object explorer i type in OSC - expecting it to appear as an object that i can drag into my patcher, no joy,

i "install" OSCroute~ - and in the max window i get some text from CNMAT, so it's in in some way,

again i type OSC into the object explorer and nothing happens,

am i missing something? how does one get the external into the patcher?

running Max 6.1.6 / 6.1.7 PC, Mac, 32 bit / 64 bit, i have all types and i can't get it to work in any of them,