I neglected to mention it here, but I released some quick code to allow me to write text in OpenGL and C#. It's called FTGL# and hopefully someone besides me will have a use for it.

The wiki page has svn info

Disclaimer: I posted this in the mono category, but haven't actually tested it on mono yet.

Update: I have finally gotten around to actually running this on Mono (version 1.2.2.1) on Windows.