How to convert PAL(720x576) .idx/.sub INTO NTSC(720x480) .idx/.sub ?
 

Here is my problem :

I got a PAL VOBSUB file.(.idx/.sub)

.idx/.sub --SubToSup--> *.sup

(NTSC)*.m2v + *.mp2 + *.sup --IfoEdit--NTSC DVD--
-------> Subtitle display too low position at screen

(PAL)*.m2v + *.mp2 + *.sup --IfoEdit--PAL DVD--
-------> Subtitle display OK

I have tried to edit *.idx file before Using SubToSup
, for example Pos, Scale,etc....,
However, SubToSup seems does not reference the .idx configuration.

I think IF i can covert the .idx/.sub in NTSC format from PAL format,
then everthing wiLL be OK.