Need data recovery tools for Compact Flash card

I have a 4-Gig, PQI-brand CF card here that was (for the first time) filled to the point that the camera gave a "card full" message. Now Windows says the card isn't formatted and none of the data recovery tools I have here will read an unformatted card.

Doe anyone here know of any free or near free tools that might help?

 

I'm going to ask that no one spend any more time on this one.

Looks like this one is going to require specialized treatment. I have been doing some reading and there are two components in the flash memory chips, the memory itself and the controller. It looks like the controller is bad, meaning this thing is going to have to be disassembled, the memory removed and read by a specialized tool.

read about it here:
http://card-recovery.biz/us/service.php