The Logic Off Topic list

Probably an easy one for anyone using Windows, but coming from a Mac 
I just about know how to start an application and not much more... 
(and I've carefully & successfully tried to remain that ignorant for 
years :-).

How do you associate a certain file extension with a certain 
application under Windows?  I.e. just like *.doc files are "known" by 
the system to belong to MS Word for example.  I suppose there's a 
Control Panel or whatever that takes care of such associations, 
right?  Or is this something the application itself has to take care 
of somehow?

Thanks in advance...  Feel free to mail me privately btw, since this 
is _really_ OT, even for the OT-list...

-- 
Hendrik Jan Veenstra  <h@...>
Omega Art: http://www.ision.nl/users/h/index.html