Adding Onto What Ghost Said...... Typically Within the Thread On Which The Hack Is Posted, There Will Be Operating Systems It Works With Specficially. Some Work Only For Windows 7 , Only For Vista, Or Only For XP.. Or So On. Do As Ghost Said, If There Isn't A Restriction Stated In The First Post.
I have windows 7 (32bit) too. U have to go to User Account control, and set it to "never notify". After that, you can use the hacks.