Onenote 2007 + Vista + Sharepoint

[Mike]

I have a problem where i cannot open Onenote notebooks off a sharepoint
server over the internet. I am useing onenote 2007 on vista ultimate and the
the notebooks are on sharepoint services 2003. it i map the sharepoint
server as a drive then i can open the notebook but i can make changes to it.
it says its read only or i dont have permissions. every thing seem to work
fine under xp sp2. is there a workaround or a fix for this.

Thanks
Mike