I FOUND IT!!! First, (if you haven't already) upgrade the installed version of Warcraft II to 1.4
here: http://us.blizzard.com/support/article.xml?articleId=20956&categoryId=2714&parentCategoryId=&pageNumber=1
Then Hold down SHIFT while starting your OS9 mac or your classic environment...
I did it once somehow, It worked great. I ran it through Classic on a Powermac G4 Quicksilver. Unfortunately I forgot how. THERE IS A SOLUTION THOUGH!!!
Good Luck!