DELL E6410 POWER MANAGER / PLAN

i own a Latitude E6410 which i upgraded the hard drive. i have installed all drivers and new OS with no problems, i just want to know if it is possible to download and enable smart energy power plan and if possible how to find the link, as i can not find it on dell website. running windows 7 Enterprise 64bit. thanks for any help or if you can let me know the best power plan or power manager to use and where to down load it from thanks