Well.. I always tell what they do, and I'll always include a HowTo..
For the levels, they're not stored as the with the normal wild Pokémon, but when I have time I'll try to look if you can edit them.
There's no open button because when you open the tool, it directly asks for the NARC..
Archuleta Shuckle has some troubles with this, it doesn't seem to work on his computer.
I hope there are no other people having this problem, cause else I'll need to edit this and add a menu. =P
And well.. If I may believe the intarwobs, the Pokémon only appear in the grass, so ;)
Think I answered everything :)