1. Get cwrsync and install the program
2. If private/public key authentication is needed (as with OwnSpace Offsite Backup), get PuTTYgen
3. Start PuTTYgen and generate a private / public key pair and convert the private key to an OpenSSH Key file.
4. Put the public key onto the backup server.
5. Get this batch file and put it somewhere on your computer and adapt the variables to your needs
6. Test the batch file running it from a command line
7. Go to Task Scheduler (to be found under Computer / Manage) and create a new Task with the batch file cwrsync.cmd as command to execute