If using a Microsoft Windows product - then the windows browser is Internet Explorer or called IE for short.

FireFox and some others would have to be downloaded & installed separately.

So unless you have a Mac or someone put another browser on the computer for you - You are using IE as your browser.

Across the very top of your screen it probably will say Windows Internet Explorer if IE is what you are using.

browser cache clearing -
http://neurotalk.psychcentral.com/post238676-9.html

Oh - But I guess I'm not sure how AOL works if they have some other way of handling online websites...

I hope you do have some anti virus programs installed as sometimes these persistent pop ups can be bad stuff.

AOL clearing cache
http://www.google.com/#hl=en&sugexp=...a5fda4cb68c09e

AOL cookies info-
http://www.google.com/#sclient=psy&h...a5fda4cb68c09e