turning import renderer off

ive tried to turn off a mesh renderer for an improted object but it doesnt turn off because there is no mesh renderer what would i use for an improted object?

Try this and see if it does anything:

Write this script, then add it to a game empty on your scene:

var ImportedObject : renderer; //Drag your imported object here in the inspector

function Start()
{
    ImportedObject.enabled = false;
}