How to activate windows 7

From LifeHacker:
Windows 7: If you miss having a network activity icon that actually indicates if your network is active or not, this handy little hack will swap the static Windows.

The solution is a tiny application called, Network Activity Indicator for Windows 7. Download the application and park your standard Windows 7 network indicator in the hidden portion of your system tray, placing the icon for the Network Activity Indicator in the appropriate place in the system tray. If you'd like step-by-step instructions with pictures on how to do this, check out the via-link below to see the tutorial at The How-To Geek.
Once you've performed the swap, you'll have the old network activity indicator back and its familiar blinking screens. Network Activity Indicator for Windows 7 is freeware, Windows only. Have a little app that makes life easier? Let's hear about it in the comments.
Network Activity Indicator for Windows 7 [via HowToGeek]

source: http://lifehacker.com/5428229/get-the-classic-network-activity-indicator-back-in-windows-7

you needed to download window 7 activator from http://cnet.in/ download and run the window loader file and choose your PC brand and then install it... it will run in background... after few seconds the PC will ask you to restart the computer press OK and enjoy your window 7 activated

Click the Start button (Orb in the lower left hand corner of the screen). RIGHT click on Computer and select Properties from the menu. At the bottom of the window you will see the Windows Activation section and an option to Activate Windows Now. Click on it and the activation dialog screen will appear.