wire frame showing when i hide faces

kunglao

I have just gone from max 8 to 9.I have a lo poly model i am working on.If i select the faces of the body and click hide so i can work on the arm they disappear,but when i switch to vertex i get a wireframe of the body appear.I cannot do anything to it but it is there.can anyone help?

kunglao

anyone? I am guessing that i need to configure max 9 sttings but where to start?As i have max 8 still on comp i am gonna try to copy the settings from that over to 9 and see if it works.Appreciate some help