Region Free

I have been looking online for a region-free DVD player. In doing so, I found out that it is just as easy to type the code into one that you purchase to make it region free. I was thinking about getting this one from the store down the street and applying this hack to it to make it region free. The same hack seems to be listed on multiple forums with people having success. The only thing I don't get is that you have to use a universal remote to do it.