According to http://www.microsoft.com/typography/fonts/font.aspx?FMID=1010, the
font Old English Text MT is supplied with Office 2003 and Office 2007 as well as
a number of other Microsoft products. If you have the installation disks for any
of those, it should be on there -- but you may have to use the "Add Features" or
custom installation choice to get to it.
An alternative is to find an Old English font for download; try
<http://www.google.com/search?q=font+"old+english">. Download the file (with a
..ttf extension, or a .zip file that you extract the .ttf from) to your computer,
right-click it, and choose Install.