thank you very much, problem solved!

Hi guys,
I've just bought a new mac and, let's say it, I'm not very practice, I didn't have any problem installing curviloft and various plugs with snow leopard, now I can't find the sketch up plug in folder, or better, I press show contents and there is a plug in folder but I don't know if it is the right one because nothing happens if I copy in there "LibFredo" or other plug ins, and even can't install v-ray for sketchup... If somebody of u guys, can help a poor noob I'll be really glad!
(ps: sorry for some eventual english mistakes)