dos command to copy between 2 domains

anybody have the syntax floating around their heads to use DOS copy between 2 domains.
i think it is something like so ...
copy C:\PathToMySQLServer\MSSQL.1\MSSQL\Backup\ReportSe rver\* remote_host=\\10.0.0.0\backup" myusername@.mydomain.com;mypasswordare the ip addresses known to each other. You could invoke robocopy from the cmd line. robocopy is a m$oft tool ... http://www.microsoft.com/technet/technetmag/issues/2006/11/UtilitySpotlight/|||yeah i just talked that over with the boss.|||My first thought would have been to try to use the runas command, but I have never tried it for this sort of thing.