Ok, so I found in HKEY_CURRENT_USER\Software\Research In Motion\BlackBerry Enterprise Server\Agents the correct profile name.
I am using it but am getting this message now,
BlackBerry Enterprise Server Utility - HandheldCleanup.exe, Version 2.0
Copyright (c) Research In Motion, Ltd. 2000-2001. All rights reserved.
Attempting MAPILogon....
MAPILogon Success.
Opening Default Message Store Mailbox -
.
Please Enter BESName: -> servername
Open() failed for servername
OpenDB failed to open Database