struct problem need help

I have a problem about this 2 structure. //--- Joint structure : Hold joint data -- typedef struct _JOINT_STRUCTURE { int id; //Joints ID int JointType; //Joint Type LPNODE ConnectTo; //point to connecting parts id int status; //connection status }JOINT,*LPJOINT; //--- Body part structure : Hold part data-- typedef struct _NODE_DATA_STRUCTURE { char name[20]; //Parts name int id; //Parts ID int MeshType; //Type of Mesh int NumJoint; //Number of joint LPJOINT joint; //Pointer to joint // position of MEsh --WDL }NODE,*LPNODE; It a syntex error when I complie it. I know it about LPNODE that I use in JOINT struct. because complier dont know what is LPNODE when time of complie JOINT struct. But how I resove this problem? I dont know how to do it. Thanks for help in advance [Edited by - kwaung on January 20, 2005 7:56:38 AM]