Your name said:
I don't have Frontpage, but I was wondering if basic webpages created with
it could be published to a host without having Frontpage extentions turned
on?
Yes, but you just can't use the features of Frontpage like forms, and so on.
It'll be nothing more than a layout and code-generator tool.
You'll need third party equivalents of the form handlers, search scripts and
whatever else frontpage offers, you can find elsewhere. For every feature it
has, you can get a thirdparty product to do the same thing, so no, Frontpage
Extensions aren't necessary.
Note: you can't "publish" through Frontpage if the server extensions aren't
installed; you need to FTP manually as normal to your host.