I'm hunting down the zoom hack memory locations with Cheat Engine now... Hopefully should have it figured out soon.
I already have the "unfreeze GUI" part done; here's the code:
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Got it!
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Change the "JNZ" to a "JMP" right after the "TEST AH, 41" instruction. OlyDebug puts the extra "NOP" in automatically.
I had to search for a 4-byte value in Cheat Engine, and zoom in ... "search for decreased value" ... zoom out .... "search for increased value" ... etc. Time-consuming, so hopefully this saves you the effort. :P
For those of you just coming here, these modifications are made using OlyDebug (like the rest of the thread) and are for PWI Client version 612, current as of Feb. 16, 2012.
Peace.