Yes, it is possible to recover the config.xml file from the CF card.
I did it just now using the following method:
I put the CF card into the CF card slot on my Epson Printer, USB connected to a Windows XP machine. I also have other CF card hardware, but the printer was easiest for me.
Using a program called UFS Explorer, I opened the CF card drive and copied the config.xml file (located in /conf) from the CF card to my Windows machine.
You can find UFS Explorer here
http://www.ufsexplorer.com/index.php?ref=appI am not sure if the program works as a trial, or must be purchased.
If you can't accomplish this yourself and can provide me an iso image of the CF card I can read it and extract the config.xml file and return it to you.