These include the large middle-class suburbs of Peoria, Mesa, Chandler, and Glendale; upscale Scottsdale; and the college area of Tempe which serves as home to Arizona State University. All areas are modern and generally lacking in historic interest, but keep in mind that Phoenix only had 100,000 residents in 1950.
do {} until ($false) is an infinite loop; it'll only exit if you use something like break, return or throw from inside the loop body. do { } until ($true) would execute the loop body exactly once (which would make the loop rather pointless.) It looks like what you intended to do was wait for a file to exist.
10 cool things you can do with Windows PowerShell. If PowerShell's learning curve has kept you from embracing it for daily use, cool might not be a word you'd associate with it. But PowerShell is here to stay. It's a core part of Exchange 2007, Windows Server 2008, and SQL Server 2008, and it has immense power worth tapping into.