Exchange Server 2007 - Commands

[C# Programming]

Hello All,

I want to find the query for Total Mail Box Size in Exchange Server 2007. I have implemented this earlier in Exchange Server 2003 with WMI using following Query. select Size from Exchange_Mailbox where Size >= 0. I have googled for it and saw lot of scripts, But I hope I can implement it in a single line query like this using powershell. Can someone shed some light for an easier solution?

Thanks in advance...

Regards
Sebastian