Updated Windows PowerShell Help topics are now live in the TechNet library at http://technet.microsoft.com/en-us/library/bb978526.aspx. We'll be updating weekly, so keep it bookmarked and check back frequently.
If you misplace this easy-to-recall URL, you can find us anyway:
- Go to TechNet (http://technet.microsoft.com).
- Click the Library tab.
- In the TOC, click Windows PowerShell.
Source : blogs.msdn.com/powershell