ACPI Modules

Hello I have been trying to get ACPI power management to work in linux. In all my research, I have found on my particular laptop it may be beneficial to install ACPI as modules in the kernel. My only problem is I do not know how to load them into the running kernel. I know to use insmod then the name but I do not know the names! Can anybody assist me in locating the names of these modules or know them off the top of their head? Thanks for Your Help!