As capz said there is not likely to be an easy way, and even if it does end up that you just need to add a given amount to the addresses then it will have still taken effort/knowledge to get to that point.
In these cases you tend to want to start by working out what the original cheat does and how it does it -- does it alter general memory, an overlay, a binary and what does it do in any of those. Your better bet would be to see if the game saves work on the other region. Copy the save across, use the cheat, copy the save back and carry on with life. Not ideal if it is cheat that constantly changes the game but if this is just filling in a library or something then it is worth a shot.
Starting on pulling apart the code though
http://gamehacking.org/wiki/Hacking_NDS#Code_Types
http://problemkaputt.de/gbatek.htm#dsmemorymaps
The 94000130 FDFF0000 code checks 04000130 which is where the control hardware states are located, not the suggested way for coding but should work OK for this.
C is a repeat code that is triggered by the above check. In this case AD times.
1 is a 16 bit write to 0215090C which is right in the main memory. That is still fairly low down in it so it might be a binary and might not. I would have to check with something like
http://www.no-intro.org/tools.htm to find out. If it is a binary patch then you have to disassemble the old code and new one to check what is changed.
DC adds to an offset that codes can use (in this case just 2). D2 exits the loop.
In this case this is what is known as a slide code and looks like it probably writes a section of memory that holds whether that monster has been seen/examined and repeats it for all AD hex of monsters in the game/library. That also means it is probably not an overlay or binary. Not sure why it needs an activator (I guess it crashes a game or only works if a monster has been seen first and needs to be activated a lot).
If you wanted to find the new section or remake the cheat then I would start a game, make a savestate, see a bunch of new monsters and then see what sections have 0063 in now that did not before. Find the start of the section and the end (or calculate it if the regions have the same amount of monsters) and you can make a similar looking cheat.
