Currently I am able to to set a mime type with adsutil.vbs for the primary web site on IIS6 with the following syntax:
cscript adsutil.vbs set W3SVC/1/Root/MimeMap ".manifest, text/cache-manifest"
This seems to work fine when I only need to target W3SVC/1.
I need to write an update script that will make sure that any sites on a given IIS6 installation have the proper mime type configured. I could either add the mime type to each individial site or at the global level. I need to do this programmatically and would like to use adsutil.vbs if at all possible.