Network Error

Hell, I'm getting a weird error in this code and I'm babbled by it and don't know what to do about it. Here is the code.

function OnNetworkInstantiate (msg : NetworkMessageInfo) {

if (networkView.isMine) { var _NetworkRigidbody : NetworkRigidbody = GetComponent("NetworkRigidbody"); _NetworkRigidbody.enabled = false; } else { name += "Remote"; var _NetworkRigidbody2 : NetworkRigidbody = GetComponent("NetworkRigidbody"); _NetworkRigidbody2.enabled = true; } } and the error is this

Assets/NetworkFIles/RigidAssign.js(14,27): BCE0018: The name 'NetworkRigidbody' does not denote a valid type ('not found'). Did you mean 'UnityEngine.NetworkReachability'?