Simple PowerShell function to retrieve OS info from a Windows machine.

Get-MachineInfo.ps1

function Get-MachineInfo($ServerName="localhost")             
{            
Get-WmiObject win32_computersystem -ComputerName $ServerName |            
SELECT DNSHostName, 
       Manufacturer, 
       Model, 
       SystemType,
       @{Name="TotalPhysicalMemoryInMB";Expression={"{0:n2}" -f($_.TotalPhysicalMemory/1mb)}},             
       NumberOfLogicalProcessors, 
       NumberOfProcessors, 
       CurrentTimeZone, 
       DaylightInEffect            
}# End Get-MachineInfo