.hd files?

Hi guys. Today I was trying to edit some files and changed one into a notepad file. Im trying to change it back but it wont let me. Does anyone know how to change it back to a .hd file? Thanks

try
changename
erase the .txt
and place .hd instead
like this

file.txt
rename to
file.hd
if it doesnt work just reinstall the game

Tried both of them and it still wont change back to its original form.. Now I cant run 2moons.

Uninstall then reinstall. That should fix the problem if not try delete 2moons folder then uninstall and reinstall.

thanksssssssssssssssssssssssssssssssss

Finaly some help of u snitches ( didnt ment to offend somebody)