Warrock -> Cheat Engine -> Adresses

If you mean just add the value to edit it, open up Cheat Engine, look along the right for "add address manually", and click it. Pretty self explanatory after that. It seems like you want to edit a command there, though, so you should click memory view on the left, right click anything on the list, and choose go to address.

Oh god, you guys have no clue how to add memory addresses. When you open Cheat Engine (CE) look towards the bottom left for a button that says "Memory View", once there right click in the upper frame and choose Find Address or Go To or whatever yours says like that. Put in the 004405d5 thing and hit enter. Voila, you found it. Now do whatever you're supposed to do with it, whether it be ZF or EAX or EDI or whatever you want.

[Edit] didn't see the post above mine . His tells you how but mine is more detailed, heh.