Cannot use Firefox because it's polluted with MyStart from Incredimail. I want it removed from my computer.
This technique is called browser takeover and it's usually encountered with adware applications. You will need to use AdwCleaner to clean the browser and your computer from these nasty add-ons. The application will completely remove this add-on making your computer clean and safe.
You can change your Start Page by Tools>Options...>Type your Start Page in Home Page>OK... I hope this helps...
Change your start page with "Tools & Options"! O:-)