Hello, I have recently bought a new pc and it came with norton free trial. However i have since purchased norton 360 3.0 version for 1 year protection. I am having great difficulty though installing this. I am following the on screen instructions which read" deleting old version" old version deleted, please restart computer" I do this and the same message comes up time after time. I don't know what to do, as it doesnt seem to be deleting old version and not adding the my new norton 360. please help thank you