Can't publish my Microsoft Exp. Web - SharePoint message!!!

[artkat]

Please help! I have been trying to publish my website. I have never had a
problem before. Now I am getting this message:
"The server sent a response which SharePoint could not parse. If you are
trying to connect to Windows Sharepoint servides server, check with the
servers' administrator tomake sure Windows SharePoint Services is installed
properly."
What the hell is SharePoint!?!? Where did it come from?
I can publish individual or groups of pages - but no longer my website!!!
Pease Help! My server has no idea what this message means!