Configuring Directives Locally under PHP4 + IIS

Hi, I currently started doing some work under PHP4 at an ISP that is running it over IIS and not Apache. They have just upgraded from PHP3 to PHP4 and some things are not very well setup. For example 'include_path' is not set, so that my previous inlude() and require() commands now have to inform the complete path. So my question is: Is it possible with PHP4 upon IIS to have the same functionality of .htaccess files as with Apache, in order to be able to configure the PHP related directives in a per directory basis? (Does IIS use .htaccess files? may I do something similar to what is done with Apache?). I wouldn't then have to even bother about their global configuration of PHP since I could be overriding any undesirable or incorrect configurations within my htaccess files. Or the configuration for such directives would be ONLY inside file 'php.ini' when running PHP over IIS? TIA, Paulo