Ventless use of Genie model KY-32U/11156

Question

I want to use this portable AC in a room where I cannot vent it out the window. I was told this was possible but have never done it before (the machine is from 2001). How exactly do I do this? Obviously I would still need to empty the container where all the condensation collects, but what else?I need to know this before 10 AM Thursday PDT, so would appreciate a prompt reply. Thanks in advance--Roberta