Also make sure that everything is up to date, try updating at least once a week to make sure you have the most recent stuff and some programs come with a live update kind of thing such as windows. Make sure this is enabled if you have the feature. But besides that everythign else has been said
But y won't you consider using Opera or firefox, they truly are good browsers. Firefox for one gives you the freedom and costomizing pretty well everything, and comming out with new updates, unlike IE that updates thier browsers like once ever year or two. However the new IE could change all that.