Normally Outlook Express stores the folders on the system drive. .dbx files are used by Microsoft’s Outlook express email application and contain your email messages.
Go to Tools > Options > Maintenance and clicking on the Store folder button.
Follow that path and open that folder
Each Outlook folder is a file in this folder with the extension *.dbx.
NOTE: It is possible that Outlook Express has created another file with the same name and replaced the existing one.
Now have created another file for Inbox and the older one renamed to Inbox(1).dbx.
If this is the case, then at least you can get messages.
First copy all these files to another folder.
Now close Outlook Express. It is necessary Folders.dbx to be in that same Store Folder, if u found the .dbx files mentioned but Folders.dbx is not in the Store Folder, do a Search on folders.dbx and move it to the Store Folder as well.
Remember: Rename the files and reopen Outlook Express.
Make sure to copy all the files to another folder.
Remember: It may need these files again, if Outlook Express behaves alike.
I am not sure, but you may also try with DBXtract….