firstly download the file whose link is given:
http://www.mediafire.com/?ymzc0gz9kmn
it provides you with player recovery class drivers and also sansa firmware updater 01.01.05 version
after then you plug your sansa express
if windows recognizes it then its ok else
if it asks for stmp 3600 drivers then select the drivers from the above downloaded file
after storing those drivers your player should be recognized as in player recovery class
and then try to run the firmware updater came with the above file or install the 01.01.12 version and run it
if this does not work insert any micro sd memory card and then try to run any one of the firmware updater versions
this would surely make your se run great
mine too is rocking
if further problem occurs contact me
tanay<tanay_93@rediffmail.com>