xf.. 我用中文冇問題喎.... 不過要set multbyte

係?我唔清楚哦...因為我點set都係一樣..
跟住又懶得換名...索性用另外一個software...

Nero 7 has lots of problems.  That's why I still stick with Nero 6.  Both Nero 6 & 7 have problems with Chinese Characters.  I always convert file names with English ones, then problem solved.  If you still have problems, it is your hardware.  Check if your dvd writer works properly, any loose connection,etc. If it is good, download the latest firmware from the manufacturer and install it.  If still no good, replace your drive.  Good luck!

Nero has the problem that i found.
You said your files are RMVB and Nero cannot burn the file which is four letters for the dot.
e.g 123.rmvb
Nero will turn 123.rmvb to other code such as 123.rmv~1
SO I suggest you to use other software.