Urgent requests should be handled with a call to Microsoft CSS.
Help for all things Exchange should be posted in an Exchange forum.
Help for all things PowerShell should be posted in a PowerShell forum -- or maybe even a web search.
If you need to change directories in PowerShell, use cd (just like you would anywhere else) -- cd is an alias for Set-Location which more or less works the same as the traditional CD from a command-prompt.
Jason | http://blog.configmgrftw.com