You might consider Webroot's Window Washer. It works with IE and AOL.
Once you get off the net it clears out all your internet activity, e.g. sites visited, temporary files, etc... then when it completes it's 'wash' you just click to 'minimize' it so that it remains as an active program.
This will prevent someone else using your computer to find out what site's you visited..
You may want to visit;
www.webroot.com they have an array of products, and like anything else everyone has their own opinion as to what works for them.
I have Windows Washer Ver. 5.0, I believe that there is a newer version out there now. It's about a $30-35 program. If purchased be sure it's the newer version (beyond Ver. 5.0), it's hard to tell just looking at the container.
Good luck.