Messed up file extensions can ruin email attachment
viewing, prevent the playing of media file and stop the opening of all
sorts of documents. See the following below...
To associate a file name extension with a file
type
Click Start, and then click Control Panel.
and then click Folder Options.
On the File Types tab, click New.
Type a new or existing file name extension, and then
click Advanced.
In Associated File Type,
Type or select New to create a file type to associate
with the file name extension.
-or-
Type or select a different file type to associate with
the extension.
Notes
When you type a file extension in the Create New Extension
dialog box, the Associated File Type list displays the file type that
is associated with that extension. To select New, scroll to the top of
the list.
A second issue with files estensions and
associations is that Windows defaults to hiding the file extension when
you look at files in a folder. To make files extensions visable all the
time in all folders can be useful.
Click Start, and then click Control Panel.
and then click Folder Options. In this case the view
tab is the issue. Uncheck hide extensions for known file types.
To associate a file with a program
Open My Computer.
Double-click a drive or folder.
Right-click a file, and then click Open With. If Open
With is not available, click Open.
Follow the instructions under the option that matches the dialog box you
see:
Open With--Recommended Programs list Under Programs, click the program
in which you want the file to open, or click Browse to locate the program
you want.
-or-
Click the look for the appropriate program on the Web link to search the
Web for a program
to open your file.
Open With--No Recommended
Programs list
Under Programs, click the program in which you want the file to open,
or click Browse to locate the program you want. You can also type a comment
that provides information about the file type. This information will appear
in the folder window under Details when you view the file in a folder.
-or-
Click the look for the appropriate program on the Web link to search the
Web for a program to open your file.
Cannot open this file
Windows cannot find a program to open the file. In the
Cannot Open This File dialog box, do one of the following:
Click Use the Web service to find the appropriate program.
This enables you to search the Web for the program that will open the
file.
-or-
Click Select the program from a list to choose a program to open the file
in the Open With dialog box.
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A note
To open My Computer, click Start, and
then click My Computer.
For some file types, you will right-click a file, point to Open With,
and then click Choose Program. To ensure that Windows always uses the
same program to open the file, or any other file with the same file name
extension, in the Open With dialog box, select the Always use this program
to open these files check box.
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For a further look at file associations
and Internet Radio see our page
on Internet radio and also our page about using Winamp
and Shoutcast.
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