anti virus renewal

before I got my reneewal in dec 09 I made the mistake of letting someone convince me that I should not use norton.  Big mistake.  He put a norton removal thing on my computer so now I don't have any anti-virus protection.  When I recieved my reneewal email and reciept for payment I saved it and now I want to download it for the duration of the subscription can someone help?  Will I be charged again if I download it?