Products of DBX to Outlook Converter
Utilities \ File & Disk Management
If you have necessity for converting DBX to PST, you can try DBX to PST Converter that can sort out your query about how to convert Outlook Express DBX files to PST. This tool can easily convert DBX files to PST with maintain all attachment, formatting, layout etc. It also allows you to use bulk facility to get unlimited .dbx files into MS Outlook.
Free download of Converting DBX to PST 7.5, size