Clear default usb flash drive selection on mac os x?

Hey ,
I'm using a VMWARE program and running Windows 7 on my macbook .
The first time i connected my usb flashdrive , the windows system was running and i got a pop up asking me if i want to open the new drive using windows 7 or mac os X , i choose the Windows and checked the "always use this choice".
Now i can only use my flash drive on the Mac OS.
Any why to clear the default selection and use the flash drive with my Windows 7 system ?
Thanks !

You will be able to open it if you make it a .iso
image. There is software available for both OSes to
open and browse/modify a .iso image file. I do not
know how well any of them use passwords for the
images.
Maybe it's winiso
What I would recommend is using Winrar
(http://www.rarlabs.com/) and just using a compresses
and encrypted file that both OS's can manipulate.
With winrar you create an archive and then each time you want to edit a file you have to extract it, modify it and then reinsert it in the archive.
What I was looking for is something more user friendly.
Images created with mac, protected with a password, are ok but are not compatible with windows.
Viceversa, U3 is compatible with windows but not mac ...

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