Want to get Norton antivirus for Mac 10.4 and for 10.5. Have Norton 10.1.2 antivirus now on Mac with OS10.4 and want to get one version that runs on on both systems so they are the same. The lap top also has XP. Have looked over the products until my head is about to explode and can not find this referenced. Running both Norton and Kapersky on laptop. i know that these are old systems but so am I. Want to stop just updating the definition and get one that works on both and XP with boot camp. Any ideas??