Well, if "official" hack doesn't work, I wouldn't have high hope with "unofficial" ones, of course. But still...
Neverlock.
Locksmith.
And TDC states for Total DOS Collection. That is biggest DOS game collection in the world - but mostly in "raw" form. (Unlike eXoDOS, that have somewhat less games, but focuses on playability).
P.S.
Winter Challenge, if you really want to go _this_ way.