SQL2008 R2 - low disk space - how to perform a bkp to a network drive?

Hi,

we have a standalone server (not a domain member) with no enough space to create a backup (.bak) for some DB, there is a way to backup a network drive??

I found the command below from http://www.sqlteam.com/forums/topic.asp?TOPIC_ID=6096

BACKUP DATABASE Foo TO DISK = '\\myserver\myshare\foo.bak' WITH INIT

Msg 3201, Level 16, State 1, Line 1 Cannot open backup device '\\192.168.100.6\dbname.bak'. Operating system error 1326(Falha de logon: nome de usuário desconhecido ou senha incorreta.).Msg 3013, Level 16, State 1, Line 1BACKUP DATABASE is terminating abnormally.

tks, Renato P