thanks again for all your help.
security center has been starting upon computer start up!
I did reset my internet options, which got rid of the IE error message for a couple days, but it is back again. And, since making the last two changes my computer has been super slow. Specifically, I can't load my yahoo email page and my spyware and anitvirus programs are taking over 4 hours to scan my computer (before it was about an hour).