Made drive letters a param

I made the drive letters in these two a scripts a param because the task sequence can be run from Software Center or PXE and the location for files can differ.

count-ad-objects.ps1

@@ -2,7 +2,8 @@
 param(
 	[Parameter(Mandatory=$true)][string]$ComputerName,
 	[switch]$DebugOutput,
-	[string]$ADModuleSource
+	[string]$ADModuleSource,
+	[string]$RootDriveLetter
 )
 
 function debug($msg) {
@@ -40,8 +41,8 @@ $secpass = ConvertTo-SecureString $pass -AsPlainText -Force
 debug "Creating PSCredential object..."
 $psCreds = New-Object -typename System.Management.Automation.PSCredential -argumentlist $user, $secpass
 
-# Copy AD module files from wintools to correct locations on X:
-$dest = "x:\windows"
+# Copy AD module files from wintools to correct locations
+$dest = "${RootDriveLetter}:\windows"
 robocopy /s /r:3 /w:5 $ADModuleSource $dest *.* 2>&1
 
 # Import PowerShell AD module