Yes, there is a way to remove the interlace for WC3 in the Kilrathi Saga! Make a batch file (a text file called, say, WC3W.BAT) in your WC3 directory. This text file will have the line:
WC3W.EXE -NO_INTERLACE
Run WC3 from this batch file from now on. You can also use the command line...