Hi reno7,
To make translations you have to mount the firmware file called AIMG or extract the contents with MagicISO then you'll find a file in the folder: ro_res\language\. You can modify that file with a hex editor, although I do not recommend it.
Oh, and please go to
www.rapidshare.com and upload your player's firmware, as zenitraM suggested. This way we can increase the collection and help others when they brick the player (and also make research).
A COOL thing i found in sunplus players: You can fast forward and rewind at 2,4,6 and 8X speed!!! Just hold left/right and when it starts to forward, release the button and press it again a few times. It will then skip much much faster 
.