To Increase Text Size...

Hold down the CNTRL keyboard key and scroll with the mouse wheel.

or

Internet Exploer: Select 'View' in the top menu bar, select 'Text Size', and click on your desired text size.

Mozilla Firefox: Select 'View' in the top menu bar, select 'Zoom', and select 'Zoom In'.

Safari: Select 'View' in the top menu bar, select 'Zoom In'.

Visit http://www.w3.org/WAI/changedesign for more information.