ok, sourceforge.com, should contain an old copy of the perl you want... it contains alot of things thou...

one recomendation... dont go searching for an old copy of knoppix... it'll be extreamly hard to find... unless you have a friend who happens to have that exact copy you want.. or by some miricle someone of P2P has acopy...

thats all i have to say.... have fun with your developement...