Use SubAdd 2007 to add subtitles to a movie. It make use of the Windows Media Player technology to play the videos. You can also search for subtitles using the program for a lot languages.

Supported files: mpeg, mpg, m1v, mp2, mpa, mpe, ifo, vob, avi, wmv
Supported device media: DVD / VCD / CD
Supported subtitles: SubRip(*.str)