Active sync SQL server

Here’s the thing boys and girls
I have bought myself a new gadget, an ipaq business navigator.
I want to synchronise it with my database on my pc so I have installed the active sync and the SQL server sync software.
However when I try to sync with the database I get the error “A request to send data to the computer running IIS has failed, for more information see HRESULT
Mobile device – Windows mobile 6
PC – Windows Vista Business
Database