grab the pc ver of scummvm from http://scummvm.sourceforge.net/
grab the iso of zak from
grab 49.lfl from the zone
mount the iso with daemon tools and copy the zakeng directory onto your hd. everything will copy apart from 49.lfl so use the one windowskiller posted in the zone.
and away you go!
no sound yet however, not sure if there would be any anyway, think it has cd audio and the iso is just a data rip.