#Import CSV-file with the following headers: old,new,sid
$users = Import-Csv -Path "\\domain.local\netlogon\renamed-users.csv"

#Determine OS-version and set profilepath variable
$OS = Get-WmiObject Win32_OperatingSystem
switch -wildcard ($OS.Version)
    { 
        "5.1*" {$profilepath = "C:\Documents and Settings\"}
        "6.0*" {$profilepath = "C:\Users\"} 
        "6.1*" {$profilepath = "C:\Users\"}
    }

foreach ($user in $users) {

#Check if SID is listed in the ProfileList registry key
if ($user.sid) {

#Rename profilepath in registry
if (Test-Path ("HKLM:\Software\Microsoft\Windows NT\CurrentVersion\ProfileList\"+$user.sid)) {
Set-ItemProperty -Path ("HKLM:\Software\Microsoft\Windows NT\CurrentVersion\ProfileList\"+$user.sid) -Name "ProfileImagePath" -Value ($profilepath+$user.new)

#Check if profilepath exist
if (Test-Path ($profilepath+$user.old)) {

#Rename profile folder
Rename-Item -Path ($profilepath+$user.old) -NewName ($profilepath+$user.new)
}

}

}

}

$aRecords = FileIO('.\data.csv', 'R') ; load file data to array
$NRecs = UBound($aRecords) ; get number of records
For $Rec = 0 to $NRecs
  $aFields = CSV($aRecord[$Rec]) ; convert CSV string to array


  ; Examine the appropriate fields from $aFields and perform the
  ; necessary task(s)
  ; If you need to modify the record,
  ; just change the element in the $aFields array - the code below
  ; handles the update


  $TRec = CSV($aFields)          ; convert from array to CSV string
  If $TRec <> $aRecord[$Rec]     ; was it changed?
    $aRecord[$Rec] = $TRec       ; replace it!
    $Modified = 1                ; show it was modified
  EndIf
Next
If $Modified                     ; was the data changed?
  If FileIO('.\data.csv', 'W', $aRecords)
    'Updated! ?
  Else
    'Update failed - ' @SERROR ?
  EndIf
EndIf