Tracy, sorry to hear about your trouble, but I can help you turn off the problem with your É and other keyboard trouble.
It's a problem with the language setting in Vista, I get it too. It switches to Canadian French sometimes and you have to change it back to US. To change it back go to your control panel, regional and language settings, keyboard and languages tab, click change keyboards...
Have the default language as "English (Canada) - US". You may be able to remove the french and multilingual options below that to help stop the problem from happening again.
Hope that helps.