How to register file extension (MIME types)

[miro]

I've written a simple GTK application and I would like to register some file extension
to be opened with my app.
I've noticed that the MIME subsytem changed a lot in Gnome from version to version.

What is a proper way to acomplish this (I am using FC2) ?

Thanks in advance,
Miroslav Rajcic

[MicahCarrick]

Information on mime types can be found at http://freedesktop.org/wiki/Standards_2fshared_2dmime_2dinfo_2dspec
and
http://www.gnome.org/learn/admin-guide/latest/mimetypes-0.html

Also check out this thread: http://www.fedoraforum.org/forum/showthread.php?t=26875