XForms - Problem with Firefox

Hi everyone


I'm new to the Mailing list and I'm new to xforms too. Maybe someone 
could give me little help. I downloaded a nightly built of firefox this 
week via download link from the projekt xforms page 
(http://www.mozilla.org/projects/xforms/). Afterwoods I should be able 
to install the extension but there is exactly my problem. When I click 
on XForms download for Linux 
<http://ftp.mozilla.org/pub/mozilla.org/extensions/xforms/beta1/linux/xforms.xpi> 
Link, firefox shows me only the normal download window and I don't know 
what is to do with this xforms. xpi extension. Do I have to download it 
and then put it somewhere in the firefox folder? Or what should happen 
when I click on the XForms download for Linux - link?

I want just playing arraund with xforms and I planned to write an 
application with xforms and decided to take firefox for testing. Ehm my 
Linux System is Fedora Core 2.

I hope someone could give me some help.


Thank you and regards
Matthias