When I write scripts for other people to use and they involve files in folders, I put the folder in my mirc folder. Also, my personal taste, I don't put mirc in its own folder. It is in a folder and in that folder would be other folders. Scripts folder holds my misc. scripts. Sounds holds my sound files. This is where I would personally put your stats folder.
Using mirc as I have described, now I just say:
\mircstats\file.ini
You can even go as far as creating the directory with /mkdir.
It doesn't matter what directory they have this in or where in the directory. I've used $mircdir but I tend to get errors if there are any spaces in the file path, no I've switched back to doing it as I've explained. I hope I've made sense.
