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 ?  www3.tvboxnow.com/ V, \9 u+ g0 S! p9 z0 G' a* q

( K  P2 v6 S, I! J# d公仔箱論壇thanks in advance.