To squeeze maximum efficiency out of Internet Information Server (IIS) 4.0, you may want to look at the amount of cache provided to each ASP thread. The default value for the metabase parameter AspScriptEngineCacheMax is 30, but if you have more than 30 ASP pages, it should probably be increased. One guideline as to how much to set it to is the value of the registry parameter ProcessorThreadMax multiplied by how many processors that the system has.