How do you change the default opening application?

[marc]

Chris Jones wrote:

> marc wrote:
>> Changing the default app for an exisiting mime-type is simple, but
>> how do you change the default app for "undefined" mime-types?
>> 
>> When I open a file in a file manager, I want it to open in
>> the appropriate application -- and most of the time it does. When the
>> file's mime-type does not have an associated app, I want to open the
>> file with my application of choice. How do I change this application?
>> 
>> The problem I have at the moment is that, somehow, the .chm reader
>> application that I have installed has become the "fall back"
>> application, which is not a good thing.
>
> Try right clicking on a file and poke around in the properties. I 
> believe in there somewhere you can change the default application 
> associated to the file type.

Yup, I know how to do it for a mime-type, it's the undefined cases I
need to fix. Thanks anyway.

-- 
Best,
Marc

"Change requires small steps."