I found the following info on another forum that explains how to locate the .dbx files.
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Open outlook express.
Click on the TOOLS Menu and select OPTIONS.
Click the MAINTENANCE Tab and then click on Store Folder.
You now see the location of your Email Folder.
Highlite the Folder Location and press CTRL+C to copy the location.
Click Cancel and then Cancel again to close all boxes.
Click the Windows Start button and the click Run. In the open box press CTRL+V to paste the mail location, then click OK.
You now have a window containing your e-mail database *.dbx files.
Close outlook express before deleting any files
gringo
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
Open outlook express.
Click on the TOOLS Menu and select OPTIONS.
Click the MAINTENANCE Tab and then click on Store Folder.
You now see the location of your Email Folder.
Highlite the Folder Location and press CTRL+C to copy the location.
Click Cancel and then Cancel again to close all boxes.
Click the Windows Start button and the click Run. In the open box press CTRL+V to paste the mail location, then click OK.
You now have a window containing your e-mail database *.dbx files.
Close outlook express before deleting any files
gringo