Ok thanks. I 'll try these, but I'm not too optimistic as:
http://www.mympxplayer.com/dload.php...le&file_id=120 --> my player is NOT a (fake) mini Ipod
http://www.mympxplayer.com/dload.php...le&file_id=131 --> the theme is very different from the one I had. The welcome screen was an opening flower with "welcome"
http://www.mympxplayer.com/dload.php...le&file_id=152 --> the theme I had was not Windows Vista.