Please, someone help me!!

[Gloria]

I'm new in this things about subtitles. I'm trying to decompress the movie to add the subtitles, but the VirtualDub says to me: Couldn't locate decompressor for format DIV3 (Microsoft High-Speed MPEP -4 V3 (Hack DivX Low-Motion)). VirtualDub requires a video for windows (VFW) compatible codec to decompress video.Direct Show codecs, such as those used by windowa media player, are not suitable.

I don't know what this mean, but I would like to hear u people. Please help me!!! If you can answer me in spanish better, thank you!!! In english is ok, too...

[paglamon]

Install FFDSHOW.