Internet Explorer display issues

So I was using my aunt’s computer today at work. All was well and good, until I tried to use Internet Explorer. The text displays on many websites(yahoo for example) as huge. I can’t find any accessibility options or anything like that that might have been accidently been selected. Even stranger to me, when I tried to print out one of the pages, the font came out just as large as it was on the screen. I installed Mozilla, and the pages display fine. Help!
-Lil

Did you try selecting “medium” under View/Text Size?