Maybe I understand your question, not 100% sure though, but here's a try. I think powerpoint has a built in function that will allow you to create a presentation and export it to a web site (HTML or Flash). I have some things to say about this, though. Unfortunately, M$ did a terrible job with the export (IMHO) function within powerpoint. The resulting pages are almost completely incompatible with all web browsers except for Microsoft's Internet Explorer.
There is also another option. Opensource OpenOffice is a free office system comparable to M$ Office. Open Office can also edit/export your M$ office docs as well! Now, the good news is, OO can convert them to REAL, cross-browser compatible HTML pages and Flash.
Again, I'm not sure if this is what you're asking, but maybe it'll help.