Open explorer window

Hi -

I noticed an issue when trying to use the following command on PowerShell command line:

explorer /root,c:\temp

This always launches explorer but does not actually display c:\temp. The same command works fine if run from regular command shell. So, it looks like Powershell stops processing the command at the first space as if I issued just 'explorer', it does not process the args.

Any suggestions on how I would make this work?

Thanks!