How to Modify Text Size In Internet Explorer 8

[Click on the Page menu, located towards the far right hand side of your browser's Tab Bar. When the drop-down menu appears, select the Text Size option.]
http://browsers.about.com/od/interne...textsize_2.htm


This will make your preferred size the default size, so you don't have to keep adjusting it.
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Adjust Firefox Font Size
nice video of how to do it -
http://www.youtube.com/watch?v=iEBBmQg26Ek