There is no specific plug-in as such for TMPGenc as it relies on whatever codecs you have installed on your system to encode. As far as play back is concerned you are best off grabbing some DVD playback software such as PowerDVD or WinDVD (I personally use PowerDVD as it will playback almost anything you throw at it, it can be found easily enough on Kazaa, Overnet etc etc, if not I do have a cracked copy *cough* I'd be willing to share).
Really now you have Nimo installed along with TMPGenc Plus you should be able to do anything you need to. The green frames are a typical symptom of a "floating point error" within the compilation of the film (simply put, a bad movie) they can be fixed but its another process altogther.
And as for your Spanish...well.....*I bow to your linguistic mastery*
