I've gone through all the topics and guides I could find, but I still haven't found a solution to my problem...

I want to create DVD's with a subtitle track that can be switched on and off. I don't have the subtitles yet and I don't want to download them. I want to create them myself and then add them to .VOB files to make a new DVD-R.

I'm not sure what software I need for creating my own subtitles and adding them to the film. Sub Station Alpha and other programs were mentioned but I can't find a place to download them.
Can anyone help me??

Thanks!