NIS 2009 Renewal: Can I buy a new one?

I am using NIS 2009 with 3-PCs under the same liscense. It is due to renewal in about a month. My local Fry's Electronic store has NIS 2009 for $60, and with the mail-in rebate and upgrade rebate, the final cost looks much more appearing than just renewing my liscense through Symantec directly. Is there a way to purchase this "new" package and put on my PCs without uninstalling the "old" ones? The current online renewal doesn't offer me any discount.  Thanks.

 

Alan

San Diego, CA