There is solfware out there that allows you to add the subtitles. You may want to do some looking around at sites that has the solfware with the patches or you can look up for the solfware and pay for it. They are easy to find, but you need to know who you can trust do to getting a virus and sometimes, it's a setup and once you d/l it and go to set it up, they got you. I know about both of those 2
The sites where you can just d/l it, you may need e-amount of post before they let you into those forums, then you need to know how to patch the program and use the keygem. Cuz if you screw up, in some cases, it will be easeir just to format you computer and put everything back on