backup to shared network folder

Hi

I need to backup all databases from SQL Server 2012 Web edition to a shared network folder. SQL server runs in a workgroup, the shared folder is in a different workgroup.

According to this post:

http://www.howtogeek.com/51788/how-to-backup-sql-databases-to-a-network-share/

. . . I need a local account on the SQL server.

I have no possibility to select the SQL server machine (Textbox: From this location) in the dialog ‘select users or groups’ when trying to find this local user for full access on the shared folder. Only the remote computer can be selected.

Previously the SQL Server run under ‘network service’ where the SQL server had no access to the remote folder, why the backup terminated with errors.

Patrick