I BELIVE I GOT THIS FROM DEATHSOFT.COM or some other site like that, but the thread got a minimum amount of attention and was written in poor English.
Well anyways, I've seen people QQ'ing about WPE not working on the latest version of private servers, but who needs WPE to edit GCD? not me :P.
NOTE: I'm not actually sure if this does work on WoWscape and stuff, I've only tried on HsWOW which really ain't very updated.
Say you want to remove global-cooldown on Moonfire.
#1: Open wow and log onto your druid.
#2: Open cheat engine, and target
#3: Open Wowhead: Working as intended. and search for the spell
#4: Now check your url, if moonfire rank 12 is the spell you chose, the last numbers in the url, would be 26988
#5: Now copy this last number, in this case 26988, and put it into Cheat Engine's scan field.
#6: Now click scan, alot of letters and numbers should pop up in the left side of Cheat Engine now.
#7: Now put all of the numbers down into the big field under them,
tho alot of spells/abilities, there is some GREEN numbers, if there is any green numbers with the spell/ability you want to remove GCD, ignore them totally, dont move them down.
#8: Now you will have to change their value to another value, how to find a value? You'll need Wowhead: Working as intended. again.
Go search for any talent, for a druid i will take a random talent, that usually does it, if not, try some diffrent ones.
and take the numbers from wowhead.com's url and put them in instead of "26988". (You have to replace all of the 26988 values to make moonfires gcd disapeer!)
#9: enter wow
#10: pwn some n00bs
>>PICTURE GUIDE<<
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if there is anything you don't understand, please tell me :]