Q: Can't download pictures via Adobe Bridge(Windows7 via Parallels Desktop)

When trying to download photographs via windows based Adobe Bridge CS4 the computer doesn't see any card attached to it, hence can't start any download. When I put eg SD card in a slot, it appears on the screen but its not recognised by Windows (which I run through Parallels Desktop). I remember when I put the card there first time it asked me whether I want to use it with Mac OS or Windows, since I didnt expect any trouble, I went for Mac. Im new to Mac and have no idea how,where to change it so that I can use my Adobe Applications properly.
Thanks a lot for help