Load Arcy II, and start a new game. 
When level 1 starts, press S, save your game in 
the first slot, then quit to DOS.

Now use a hex editor on the file SAVE1.DAT from 
the main directory. Find hex location 101.  
Changing its value (which should be 01) to a hex 
number between 01 and 14 (levels 1 to 20).  
The save game should now go to the specified level 
when reloaded.