How can I change the default file presentation for Windows XP

1. Double click on My Computer or use any existing Windows Explorer Window
2. Change the current view to DETAILS or whatever view you would like to make your default.
3. Go to Tools -> Folder Options
4. Click on the View Tab
5. Click on the button that says "Apply to All Folders"

Here you can find some screenshots and instructions on how to do it.

Edit

As stated in the comments the steps given are for Windows Exporer, not for the Open / Save Dialog.

The Open/Save As default view type can't be changed, unless its done from the actual source code in the way the file dialog is invoked. A workaround could be something like this http://www.file-ex.com/welcome.html

To make it easier for others, I'm putting the real answer here:

The Open/Save As default view type can't be changed, unless its done from the actual source code in the way the file dialog is invoked. A workaround is something like File-Ex v3 which works on XP (among other OS versions) and found at http://www.cottonwoodsw.com/fx3summ.html