ryan's dashboard

Is there a way I can disable the following in the console output and for rake.
** [NewRelic] New Relic RPM Agent 2.8.11 Initialized: pid = 1595, handler = mongrel
** [NewRelic] Agent Log is found in /Users/ryanstout/Sites/botb2/botb2/log/newrelic_agent.3000.log
** [NewRelic] NewRelic Agent Developer Mode enabled.
** [NewRelic] To view performance information, go to http://localhost:3000/newrelic

If I upgrade to a professional account, how does it count the number of instances? (Like if I boot up a 2nd instance for 5 minutes, will that count as double for the whole month?)