How do you configure an HTTP monitor for websites that rely on host headers ?
There is an HTTP APM... I have not used it yet...
Not sure if this is what you are looking for...
http://www.solarwinds.com/NetPerfMon/SolarWinds/wwhelp/wwhimpl/js/html/wwhelp.htm#href=OrionAPMPHComponentTypesHttp.htm