To install:

- Copy "Data" directory to your Skyrim directory
- Back up Skyrim\Data\Interfaces\fontconfig.txt
- Add this line to the top:

fontlib "Interface\dvsm.swf"

- Change the line with $ConsoleFont to this:

map "$ConsoleFont" = "DejaVu Sans Mono" Normal

- And you're done.

DejaVu font page: http://dejavu-fonts.org/wiki/Main_Page (go here for downloads and license info)