To be specific, are you saying that your ISP does not provide FrontPage
Service Extensions at all? And, are you also saying that they did offer
FPSE, but have chosen to stop?

Assuming that you are saying that you can't use HTML uploading, then you can
FTP, or in the worse case, every webhost provides some form of upload
manager/tool, and you could upload it that way. Reference:
Uploading/Publishing articles:
http://msmvps.com/blogs/dbartosik/archive/category/1921.aspx

If you are using a form on your page, you will have to find an alternative.
The "built-in" Publisher forms are dependent upon FPSE to work. There are
workarounds...

DavidF