Can you a virtual service account access the network in workgroup

view story

http://serverfault.com – By default SQL Server Uses a virtual account for the sql server service: NT SERVICE \ MSSQLSERVER which is a Virtual Account. I know you can give this account nework access in a domain by adding security to MyDomain\MyComputerName$. Can the same thing be done in a workgroup? I tried to added security to MyWorkGroupName\MyComputerName$ but it won't let me. I want sql server to store backups on the network. If not is my best alternative is just to run SQL Server service as a standard user account? (HowTos)