Take On Helicopter 4xDVD5 by Pakrat
1. Install the game.
2. Download the TOH-INNOCorrected.rar & extract where you have LOTS of room. ( NOT in Gamefolder )
3. Edit the TKOH.iss script & change first line:
"C:\Program Files (x86)\Take On Helicopters\"
TO "WHEREYOURGAMEISINSTALLED\" (
\" MUST BE THERE )
**** See NOTE at BOTTOM REGARDING SERIAL # ****
4. Save the changes & run the script. This will take
HOURS, 14GB Game!! So be patient.
5. The files will be in the Compiled folder.
MOVE setup.exe & Setup-1*.bin to TO_HELI1 folder
Setup-2*.bin to TO_HELI2 Folder
Setup-3*.bin to TO_HELI3 Folder
Setup-4*.bin to TO_HELI4 Folder
6. Use any name for label you wish.
SCREENSHOT
IMPORTANT NOTE: You MUST Use Regedit to get YOUR Serial #
Win7:
[HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Bohemia Interactive Studio\Take On Helicopters]
"KEY"=hex:
AA,BB,CC,DD,EE,FF,00,11,22,33,44,55,66,77,89
XP:
[HKEY_LOCAL_MACHINE\SOFTWARE\Bohemia Interactive Studio\Take On Helicopters]
"KEY"=hex:
AA,BB,CC,DD,EE,FF,00,11,22,33,44,55,66,77,89
The RED numbers/letters MUST be entered into the ISS script in the [Registry] section, very easy to see where, as its only 2 lines. Otherwise when you try to start the game it will complain about invalid serial entered.
( The values made up in the script are just that invalid ) 
Thanks to Smokie for corrections