Google knows about pc health: Link to google search for pc health.

Do you 'need' the Yahoo toolbar? You can set Yahoo as your search engine by choosing Tools, Manage Add Ons and then click on Search Providers. Choose Yahoo, Click on Toolbars and Extensions and disable Yahoo Toolbar (right click, disable). Restart IE. The problem with toolbars is that their behavior is unpredictable.

Click to tools > internet options > general and you will see the place to select your home page. If you're on the page you want to be your home page when you start this you can just click 'select current' and that will do it.

He is a tech so his thinking was probably because ccleaner has a registry cleaner incorporated he took it out so no errors or mishaps would occur, I use both tools but I don't use the registry cleaner in ccleaner even though it makes a back up. There is no real benefit in cleaning the registry in windows xp. So if you use the tool that way I think you will be fine with it and you can reinstall it if you like.. zep