Read this first:
http://www.digitalfaq.com/forum/show...ions-1948.html
To make a DVD "region free", you just need to rip it correctly, and burn a new copy.
If your DVD player does not play PAL, then I suggest getting one that does. Conversion is not the ideal solution here. Read more about this, and why, at the top of this page:
http://www.digitalfaq.com/guides/vid...t-pal-ntsc.htm
A new DVD player -- one capable of PAL -- are as low as $25-30 dollars in general retail stores like Target and Walmart. Pretty much anything made in China (which is most all DVD players now), play both PAL and NTSC.