I got it with Microsoft XML SDK 4.0.

>Where do I find this help file? It is not on my XP machine.
>
>>As in Help file, "xmlsdk.chm":
>>
>>*---------------------------------------
>>The ServerXMLHTTP object offers functionality similar to that of the XMLHTTP object. Unlike XMLHTTP, however, the ServerXMLHTTP object does not rely on the WinInet control for HTTP access to remote XML documents. ServerXMLHTTP uses a new HTTP client stack. Designed for server applications, this server-safe subset of WinInet offers the following advantages.....
>>*------------------------------------------
>>
>>>NEWOBJECT("MSXML2.ServerXMLHTTP") vs. NEWOBJECT("MSXML2.XMLHTTP")
>>>
>>>Thanks