Microsoft's Core Fonts
An ufortunate legacy of the browser wars is that many sites are IE specific and
more importantly are designed around a few Microsoft specific fonts. These
fonts were released for free on the web, the Tahoma font does require a valid
Windows License.
Installation instructions
The site http://corefonts.sourceforge.net/ has links to the required files and
instructions for building and installing the fonts on Linux.
Download
Windows users without these fonts can simply download these files:
http://sourceforge.net/project/showfiles.php?group_id=34153&package_id=56408