$username="Victor";

 $password="******";

 $pass = ConvertTo-SecureString -AsPlainText $password -Force

 $credential= New-Object System.Management.Automation.PSCredential -ArgumentList $username,$pass

 $uri="http://YourServer/ReportServer/ReportService2005.asmx";

 $webServiceProxy = New-WebServiceProxy -Uri $uri -Credential $credential

 $rdlName="Test"

 #Backup

 $backupDateFormat = (Get-Date -format yyyy_MM_dd)

 $backupDir= "D:\" + $backupDateFormat +"\Report\"+$rdlName

 $rdlDefinitionBackup = $webServiceProxy.GetReportDefinition("Report/" + $rdlName)

 $memoryStreamBackup = New-Object System.IO.MemoryStream (,$rdlDefinitionBackup)

 $xmlDocBackup = New-Object "System.Xml.XmlDocument"

 $xmlDocBackup.Load($memoryStreamBackup)

 $xmlDocBackup.Save(backupDir+".rdl")

 #Upload

 $rdlDir="D:\CI\File\"+$rdlName+".rdl"

 $rdlFileStream=[System.Io.File]::OpenRead($rdlDir)

 $rdlFileStreamLength=$rdlFileStream.Length

 $rdlDefinition = New-Object Byte[] $rdlFileStreamLength

 $rdlFileStream.Read($rdlDefinition, 0, $rdlFileStreamLength);

 $rdlFileStream.Close();

 $webServiceProxy.CreateReport($rdlName,"/Report",$TRUE,$rdlDefinition,$NULL)