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 ?  
/ Z7 P# V  }9 L: b& L3 M# Jwww1.tvboxnow.com公仔箱論壇/ `6 d# k, b3 W- i! q- W
thanks in advance.