[Bug 43910] "Battle.net helper.exe" [NOT BLIZZARD APP!] crashes with Win 7 or higher

https://bugs.winehq.org/show_bug.cgi?id=43910

--- Comment #25 from Storm Engineer  ---
(In reply to tisi from comment #23)
> I got the error from helper to go away by adding new configuration in
> winecfg for
> battle.net helper.exe
>
> I set it to xp and could login to battle.net again.
> also this fixed some games for me.

Forgive my ignorance but how does one make custom settings for individual
executables? I tried Googling this several times and found nothing.