SQL DBA to biztalk Server

Good luck and that is good news that your skill set is sprawl across other BI related tools from Microssoft.
http://msdn.microsoft.com/en-us/library/aa577454(BTS.20).aspx
http://blogs.msdn.com/biztalkperformance/
FYI
It is recommended to draw up a thorough server monitoring plan once you have established your baseline performance metrics for a server. A few elements that should be incorporated into a server monitoring plan are:

• Identify those server events which should be monitored.
  • Determine and set up monitors and alerts to inspect the events
    • Determine whether filters are necessary to reduce the quantity of monitoring information which you want to collect and then configure any necessary filters.
      • Establish a logging strategy to log event data that should be analyzed. Alternatively, you can monitor and analyze server activity when it occurs.
        • View and analyze data collected by events in the Performance console.