请问怎样用subtitile的file (sub) ??

alantct

i hv a movie file, Lelio.Po.Po.2010.DVDRip.XviD.ONiE and another two files (seprate) is the sub  & idx file. may i know how to use or combine the video file so that i can watch it with subtitle ?  tvb now,tvbnow,bttvb9 D+ r, r" C; V0 n# y% [% v* o

* x/ a( E9 Z5 @公仔箱論壇thanks in advance.