How do you change the default opening application?

[NoOp]

On 08/06/2009 01:04 AM, marc wrote:
> NoOp wrote:
> 
>> On 08/05/2009 09:59 AM, marc wrote:
>>> 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.
>>
>> Right click and select Properties|Open With|Add
>> You can then add the application if it's not already there. Select 'Use
>> Custom Command to put in the path of the app if it's not listed in your
>> applications.
> 
> Yes, tes, I know, but this isn't what I'm asking.
> 

Well you've got me there... Just what _are_ you asking then?