When you install Sonar on your machine, you will be promted to choose 32 bit or 64 bit.You won't have to buy a new installation. Hope this helps. James From: ddots-l-bounce@xxxxxxxxxxxxx [mailto:ddots-l-bounce@xxxxxxxxxxxxx] On Behalf Of Julie M. Sent: Sunday, January 30, 2011 7:10 AM To: ddots-l@xxxxxxxxxxxxx Subject: [ddots-l] sixty-four bit Sonar Hi. I bought Sonar 8.5 for 32 bit computers. However, I need to purchase a new computer, and it will likely be 64 bit. Do I have to repurchase the program, or can I download the sixty-four bit version? Thanks. __________ Information from ESET NOD32 Antivirus, version of virus signature database 5831 (20110130) __________ The message was checked by ESET NOD32 Antivirus. http://www.eset.com __________ Information from ESET NOD32 Antivirus, version of virus signature database 5831 (20110130) __________ The message was checked by ESET NOD32 Antivirus. http://www.eset.com