http://www.titlefactory.com/

TitleFactory consists of three products that will greatly increase your productivity and reduce the amount of time to add subtitles or captions to your video or DVD product. The products allow the easy creation of subtitles and captions from scripts or transcripts and easy timecode creation. Supports NTSC, PAL, SECAM, or any other frame rate. Can create subtitles or captions for professional DVD authoring products such as::

Sonic Scenarist® and ReelDVD®

Pinnacle Impression DVD Pro

DVD Maestro

Adobe EncoretTM DVD (Soon to be released

Create thousands of subtitles or captions from a script of your video project in minutes. Highly configurable script (from any word processing package) preprocessing, processing options, and output image settings will create subtitles utilizing your artistic talents, relieving you of time consuming and tedious tasks. TFactory also supports text files that have already been timecoded.

more info here: http://www.titlefactory.com/tfactory.htm
$69 USD