Hi,  I bought HAL 3.0 through the mail from a Popular Science ad about  year 2000. Or there abouts anyway.  Since a new version comes out every year or so, do I have to buy HAL again to have the newer versions? If so, then, is there a discount price or is it full price?  My 3.0 HAL was mailed from  3175 West 42nd Str.  Erie PA 16506.  I have no receipt, just the box the CD case was packed in. 
Thank you for your help.