Question : Powershell script that lists IPhone devices connecting to OWA servers

I administer an Exchange 2003 SP 2 environment that service mobile clients via OWA. I would like to obtain a powershell script that audit OWA sessions that's initiated by IPhone devices.    

Answer : Powershell script that lists IPhone devices connecting to OWA servers

i would update the following section:

Foreach ($l in $logfiles)
    {    Write-host "Processing "$l.fullname
        $log = "\\$s\c$\windows\system32\logfiles\W3SVC1\" + $l.name
        $listousers += gc $log | where {$_ -match "DeviceType=iPhone"}
    }