extending browser's http implementation

From: ob <omir@cup.hp.com> Date: Thu, 24 Dec 1998 20:11:34 -0800 Message-ID: <061601be2fbc$a9278850$b4c60d0f@ob716701.cup.hp.com> To: "W3C HTML List" <www-html@w3.org>, <ie-HTML@LISTSERV.MSN.COM> · This archive was generated by hypermail 2.2.0+W3C-0.50 : Monday, 6 April 2009 12:59:04 GMT

Hi,   a bit OT:
Does anybody know how to extend http implementation in IE and / or NN to be
able to handle a message which is an extension of standart http spec (like
say 498 defined as ... ) . you can Assume that anything can be installed on
a client PC/ browser (Activex, .dll, .exe, plugin, etc) and that http server
already was extended.
If you dont know can you please point me to where it could be answered?
Thanks a lot.
Have good holidays.
ob