Data Recovery - How to Restore Deleted / Formatted Files on HD Micro SD Card
Take a look at PhotoRec.  

There are also similar question on Super User that may help:


Recover data from SD card
How do I recover files from an USB flash drive?


Here's the full list of Data Recovery Program links:


Easeus Pro
Data Recovery Tool a nice tool but it's not free
PhotoRec and TestDisk from CGSecurity
NTFS Undelete (works also with FAT32 unlike the name suggests)
WinHex
Active File Recovery
Scalpel