Please Please help. I'm trying toinstall Norton Antivirus but I need to get rid of my old McAfee antivirus program first. I have uninstalled it already but there are still a few of it's mcAfee files that won't delete.. It's saying access denied.. (disk full or write-protected) . These are all dll files.. whatdo I do?? How do I get rid of them so that I may install Nortopn antivirus? Please help