problem with HrESEBackupRestoreGetNodes

Greetings...

There is some problems with calling this function:
When first parameter is NULL (MSDN says that it is normal) -- this function
returns error code == 5 (access denied). When I pass full computer name --
this function throws exception "The RPC server is unavailable"
So how to call this function?

Best regards...
[359 byte] By [_hunter] at [2007-11-20 10:02:45]