Backupscript for Windows Server Version

i need a script for backuping some data from a windows server to an external storage. Through the script i must be able to choose the right folder/data and store them, and also i should be able to specify the location to store my data. The script should store my configuration and through a task/cron the script should work periodically. and if possible the script should check the version of the data and overwrite if newer. thats it Requirements: - Knowledge of Windows Server Architecture - Knowledge of Scripting under Windows Server - Exakt working - It's not allowed publishing this work in private portfolio or elsewhere - A documentation about the programming - Payment: 100% Milestone would be created by the begin, after the job is done the milestone would be released Pls. don't bid if you don't agree with above, and pls. don't bid if you r not sure about the requirements!!!