If you have a *.str subtitle file with your DivX file, then set it up as per my Tute, but in the Subtitles tab, tick on Rip Subtitles and select Permanent. then when your ready to start encoding and click the button with the green tick, it shows an option of "Add External Subtitle Streams", then click that and piont to your *.str file. Then continue on with the conversion.
@ricardo_medina, please ask your question ONCE only and in its own thread, that way someone might answer you.