If so, it's probably "malware" and needs to be removed using a "good" antispyware removal tool such as Malwarebytes or SuperAntispyware.. Let us know.
As to the registry cleaner product, you'll find that most registry cleaners seem to cause more problems than they fix.. I've yet to see a registry cleaner that actually increased performance, yet we frequently see such cleaners create substantial problems on these forums. It's your decision whether to keep it.
As to reinstalling a new antivirus program after removing McAfee, the answer is YES. As to which one you use, that's your choice.
Hope this helps.
I'm not a beginner but probably fall into the category of advanced beginner. I have a Windows XP Home SP 3 computer. And I your need help. I've had McAfee the past two years and it has been a drag on my system and creates ongoing problems. I also installed Max Registry Cleaner & Spyware 2010. Yesterday McAfee informed me that my protection wasn't working and that I should reinstall. Well, I decided to uninstall instead. Can I now install a new antivirus program (I have Shield Deluxe 2010 in mind)? Or should I remove the Max products first? Can I operate all of them at the same time? What do you think the best Antivirus/Internet Security program is? Thanks! Vicky