Error Creating Directory

I am trying to get the file browser to work using an Absolute File Path. Here is my code:

// Path to user files relative to the document root.
$Config['UserFilesPath'] = '/content/' ;

// Fill the following value it you prefer to specify the absolute path for the
// user files directory. Useful if you are using a virtual directory, symbolic
// link or alias. Examples: 'C:\\MySite\\userfiles\\' or '/root/mysite/userfiles/'.
// Attention: The above 'UserFilesPath' must point to the same directory.
$Config['UserFilesAbsolutePath'] = 'hsphere/local/home/national/'.$_SESSION['BaseURL'].'/content/' ;

Be aware that $_SESSION['BaseURL'] is NOT the same as where FCKEditor is running. I get an "Error Creating Folder Message" that says "can't create hsphere directory".

What do I need to do to allow the file browser to browse this directory?

EDIT: I should add that I have created the necessary directories and CHMODed them to 777. (content/file)

EDIT: Let me also add that using the following code results in an error that reads, "Error creating folder ''' (can't create directory)":

// Path to user files relative to the document root.
$Config['UserFilesPath'] = '../../../../../../../'.$_SESSION['BaseURL'].'/content/' ;

// Fill the following value it you prefer to specify the absolute path for the
// user files directory. Useful if you are using a virtual directory, symbolic
// link or alias. Examples: 'C:\\MySite\\userfiles\\' or '/root/mysite/userfiles/'.
// Attention: The above 'UserFilesPath' must point to the same directory.
$Config['UserFilesAbsolutePath'] = '' ;