Convert the file with Videora iPod Converter.
1. Run Videora iPod Converter
2. Convert Screen.
Click the Convert tab on the left.
3. Transcode New Video
Click Transcode New Video and find the big VOB file DVD Decrypter created for you. (Hint: look for it in a place like "C:\DVD_NAME_HERE\VIDEO_TS\VTS_01_01.VOB")
4. Output Videos To...
Click the Setup tab on the left and define where you want the finished product to end up.
5. Quality Profile
Give your video a Title and pick the Quality Profile MPEG-4/320x240/768kbps Stereo/128kbps. (others will work as well, experiment to find the best choice) Then click Start to begin encoding.
6. Wait for it to finish.
7. If encoding doesn't work, check for errors.
Videora iPod Converter uses ffmpeg which is a Unix program. In order to run ffmpeg under Windows, a current version of cygwin is required. You may find errors relating to this in the error log. Enable it and see what it says.
8. Import into iTunes
If all seems to have gone well, open iTunes and drag your new video onto your Library or directly onto your iPod or iPhone.
That's it. Enjoy!