Return ID on INSERT?

You just need to add @ID to the params collection and then retrieve it like this,

cmd.Parameters.Add("@ID", SqlDbType.Int, 4).Direction = ParameterDirection.Output;
cmd.ExecuteNonQuery();
//Now just read the value of: cmd.Parameters["@ID"].value

Or, if you prefer this syntax:

SqlParameter param = new SqlParameter("@ID", SqlDbType.Int, 4);
param.Direction = ParameterDirection.Output;
cmd.Parameters.Add(param);