The solution is to copy your old "CARDS.DLL" to the folder that Golf.exe and Cruel.exe are in. As you don't want to overwrite the new CARDS.DLL, just make sure you move the old games somewhere else other than the Windows directory, like "C:\Program Files\Games" for example.  The old card games are simple enough that they don't care what directory they're in, and there's no fancy registering, etc. The games will look in their own directory for CARDS.DLL before looking in C:\Windows\System, and everything will work fine.