Network Monitor configuration questions

Network Monitor configuration questions

1) I have over 200 hundred switches I monitor with Network Monitor.  I do not have, nor do I want to configure, DNS names for all of those switches.  OpUtils pulls the System Name via SNMP.  How can I replace the "DNS Name" column with a "System Name" column?  I would love to do this everywhere in OpUtils, but the Network Monitor would be the first place I would like this change.
 
2) I have edited the email alerts to replace the "DNS Name" field with the "System Name" field and when I click the "Save" button I get a message saying the change was successfully made.  But the emails never change - they revert back to the default every time.  How can I get my change to stick?
 
3) Email alerts for devices that go offline are working great.  How can I configure an email alert for when a offline device comes back online?

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