I've just bought HP envy 17 30 3090NR. suggest me best app for this laptop.. 1. best codec 2. best movie player for 3d as well as 2d pictures 3. best antivirus (norton is installed by default rightnow - shd i keep it or uninstall and buy new one) 4. any other suggestions.. ms office 2007/10/other?? 5. shd i keep power plugged in always or use only on battery? when i'm using laptop, if i keep plugged in all the time, will it harm/overcharging? i just wanna ask how to maintain battery life.. 6. shd i keep windows update on and update regularly? 7. any accesory i must buy? like cover or any other thing? plz answer above questions.. thx..