I use autocad 2000 at my job to create drawings for CAM.  The machining paths are numbered between 521-850 (this is the block name) each time with numbers being used throughout this range, not nessecarily in order.  What I want to do is get only these numbered blocks to insert all at once with one command at 0,0.  Question one: Can I get a list of just the block names with autolisp?  Question 2: Can I filter the block names with some sort of  cond? or will I have to go about that another way?