Realtime content control

[Terry Hayes]

I've been looking for weeks on this without much luck so I'm ready to give
up and just use Powerpoint online broadcast. I want to deliver a
presentation via the web but only to one or two viewers. I was hoping to
broadcast (narrowcast I suppose) simple html or dhtml pages which change at
my control. I guess it involves a kind of server push with commands to
update pages from my PC. The important thing is I want to initiate the page
update not have it happen automatically according to a predetermined time
sequence.

Can anyone help please?

Thanks
TJ