The only advice I can give is from this link. You can copy either NTSC or PAL format movies, but not to each other with 1clickdvdcopy, which is what I use. That implies there is some program that can reencode it, but I couldn't tell you what at the moment. If I find something, I'll post the link here in another message. 
http://www.1clickdvdcopy.com/usersfaq.html
Can I convert a DVD to another format, like PAL to NTSC?
"Although you can copy both NTSC and PAL DVDs with our software, you can't convert between formats.
NTSC and PAL are broadcast formats which are very different. The frame rate and resolution of each are not the same are require that the video be reencoded in order to convert between formats."
