Marcello , try formatting your player first. The guide is here
http://www.mympxplayer.org/how-to-re...ck-vt2400.html
You should not need to install any drivers on your computer, as the player functions as a normal USB thumbdrive. So just plugging it in will detect the player. The driver is for Win98 which does not contain the required driver information.
Do you still remember your previous working firmware version number?