How do you make a certain application be the default when opening a document?

I have both Word 2003 and Word 2007 on my computer. I want to make my default be Word 2003 instead of Word 2007 (which it is right now). How do i change my default application?How do you make a certain application be the default when opening a document?
As far as I know, there is no default word processor in either Word XP or Word Vista. Instead, there are default openers for the new .docx and the old .doc file formats. Word 2007 usually sets itself up as the default opener for .docx, and Word 2003, for .doc.



Unless you have the free Microsoft Compatibility Pack installed so you can read and edit .docx files with Word 2003, you definitely don't want W2003 to be the opener for .docx files. Even if you do have the Compatibility Pack, it's still a good idea to let Word 2007 handle .docx files. You can always force Word 2003 to open one with a one-time Open With right click.



But if you still want the procedure to change file openers, here it is.



In Windows XP:



1. In Windows Explorer, find a .doc file. (.docx file for Word 2007)

2. Right-click on it and select Open With.

3. If MS Word shows up, select it.

4. If it does not, click the Browse button. Navigate to the directory C:\Program Files\Microsoft Office\Office10 (Office10 for Word 2002 (XP), Office11 for Word 2003, Office 12 for Word 2007). Find and select the file winword.exe.

5. In either case, check the checkbox Always use the selected program to open this kind of file.

6. Click OK.



In Windows Vista:



1. In Windows Explorer, find a .doc file. (.docx file for Word 2007)

2. Right-click on it and select Open With. If a menu pops up, select Choose Default Program.

3. Go to Step 3, above.



Hope that helps.How do you make a certain application be the default when opening a document?
You can go to Computer and then click Tools and Folder Options. Then choose File Types. Then choose an extension and click ';Change'; document program. Then look for your Word 2003 program to change it to that.
right click on the file...choose open with....find word 2003 and check the box....saying ';use this program with all these file types';
Right click one of your documents you'd like to open with Word 2003.

Click Open With..

Select Word 2003 (May have to browse to find Word 2003)

Check the box that says: Always use the selected program to open this kind of file
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