A few friends of mine suffer from this problem... try this !!!

Remove Shortcut Virus From Pendrives and Memory Cards without Antivirus

If all your folders in pendrive/flash drives or memory cards are converted into shortcut icons then it is a good news for you. 
Now I’m going to tell you how to remove this virus without using any antivirus software. If you have not formatted your flash drive then you can solve this problem.

Most of the people come across this type of issues with their working environment.  So for solving it follow the steps given below:

Steps are very easy

First of all Click on Start >> Run >> and type cmd and click on OK.
Here I assume your pen drive letter as G:
Enter this command.
attrib -h -r -s /s /d g:\*.*
You can copy the above command >>  Right click in the Command Prompt and
paste it.
Note : Don't forget to replace the letter g with your pen drive letter.
Now press Enter
That’s it!

Now you can  check for your files and folder in  Pen Drive.

TIP: You can open Run Command using your ketboard shortcut key combination. Press  Ctrl + R

Taken from :

 http://www.trickstoday.com/2012/01/remove-shortcut-virus-from-pendrives.html