Mime Editor

[Steven Pasternak <stevenp500 bellsouth net>]

Hi All. I am using debian sarge (gnome 2.8), and want to know how to 
edit the mime database. I sort of remember an app to do this before 
(gnome 2.4 maybe), but now I can only use right click a file (ex. 
foo.mpg) and tell it what to do with other files like it. My problem is 
that I use glabels, which saves in the extension .glabels. Nautilus 
thinks it is a gzip file and tries to open it with file-roller (it 
bombs). If I change the "open with" setting, it will open all gzip files 
with glabels (also bad). Under kde, you can associate extensions 
(.glabels,.mpg,etc.) with apps, and you used to in gnome. What happened? 
How do I change the database without going in /usr/share/mime and 
editing files that say "Do Not Edit!"? Thanks!
-Steven