issues publishing from frontpage 2003 client to apache 1.3.33 server

Hi Guys,
i am having issues publishing a new frontpage 2003 website to an apache
server 1.3.33 at my webhost...

It is a large website that has bee working well up until yesterday. I
decided to rebuild it from Frontpage 2002 and change layout a little,
including newer layers etc.

No it starts to publish, gets part way there, creates folders and then hangs
and sends back this error from the server

" 406 Not Acceptable
Not Acceptable An appropriate representation of the requested resource
/_vti_bin/_vti_aut/author.exe could not be found on this server.
Apache/1.3.33 Server at www.e-itsolutions.com.au Port 80 "

I have tried publishing part web, full web, different web, single files and
still get this error...
I have had the extensions removed and reinstalled and still get this error..
I have tried another PC with a new install of frontpage, still the error so
I can only see that it is still server side...

Any ideas on this one....

PS: Should I ask about the hosts intention to upgrade to apache 2.0 and
whether they support newer fp exyensions... Could this be adding to the
issues???

Again, any help would be appreciated...

David Craker