McAfee Virus Scan was installed with our new Dell computer. Now that the introductory offer has expired, I want to download a Norton antivirus program that came with our ISP, Juno. I have tried several times to uninstall McAfee without success.  Each time I try, I get a message that the components cannot be initialized.  I have tried removing the program in SAFE mode as well, without success.  Is it possible that I'm missing the uninstall component on my computer? Who should I contact for help?