You don't have to do much of anything.
1. Download
2. Extract to a folder of your choice
3. Go to the folder you extracted it to and locate the FOLDER named "a" *there will be no quote's*
4. Click on the FOLDER named "Release"
5. Click "a.exe" to run the hack.
Don't forget to give thanks to the coder, he worked his ars off making this thing.