You can trick outlook express to get the DBX or MBX files (depending on the version of OE) by following these steps. (written for DBX, but works the same if OE is using MBX)

Create a new directory. Open outlook express, goto tools options, maintenance, store folder point it at the new directory. You will be asked to restart outlook Express, do so. When that is done, right click local folders, new folders, then create a folder of the exact same name as the .dbx file, obviously without the extension, do this for all the dbx files you need to read.

Then (MOST IMPORTANT) open each folder in outlook express. You need to open the folder for outlook express to create the appropriate file.

Once thats done. Close outlook express.

Copy the .dbx files from your store to the mail store directory. start outlook express and you will find the mail and any newsgroups are there to view.

Note that other e-mail programs may work in a similar fashion, I have not had an opportunity to experiment with them.

If this doesn't work or you want to use a utility to do this for you download these free utilities:

DBXtract http://www.oehelp.com/DBXtract/Default.aspx

MBXtract http://www.oehelp.com/MBXtract/Default.aspx