You have to set that functionality up in Powerpoint itself (to automatically do
the transitions image to image.)
How have you inserted the PP file into your web page? Save As HTML in PP then
copied across? or opened the created PP/html file in FP?
It will lose the funcationality such as transitions (therefore it provides "next"
and "previous" links) if you do that, you need to insert it as a plug in I think
and this depends on the user having Powerpoint or the viewer to see your file,
with all the transitions intact because in effect they are viewing the PP file,
not html created from the PP file.
There are better ways than PP to do the continuous changing of images.
Google for "slide show scripts" or visit
www.dynamidrive.com,
www.hotscripts.com
or
www.javascript.internet.com for scripts that might be useful.
By the way I think "streaming" refers more to multimedia such as audio and video
which play as it downloads from a site, not still pictures in a slide show as
you've described.