You did not provide the version of PowerPoint your using, so here are a couple
of options
Make PowerPoint 2000 HTML open full screen
http://www.rdpslides.com/pptfaq/FAQ00148.htm
Making PowerPoint 2002 (XP) HTML open full screen
http://www.rdpslides.com/pptfaq/FAQ00428.htm
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Michael Koerner [MS PPT MVP]
I don't manage to hide the outline when I publish my powerpoint presentation
on the web.
I followed all instructions in the help pages of powerpoint. the only result
is that the outline is collapsed, but still present.