Has the webhost given you Advanced Author permissions or just Author permissions.
You can check this by opening the domain website directly by in FrontPage
File > Open > enter
http://yourdomain.com
If you can list the contents of the web FP extensions are set-up. However if you can not upload certain pages, such as those with advanced features / shared borders etc. Then the host has only given you Auhor permissions.
If you can not even open the website then either the FP extensions are not installed or the domaihn has not yet propogated to your host.
Andy.