Live Office configuration

Hi,

We've recently installed BOE XI 3.1 sp3 and we want now to use Live Office.

I installed the product on my computer and tried to configure it but I have an error "Unable to connect to the remote server"

My configuration :

User name : Administrator

Password

System : GVAS01903011 (CMS where BO is installed)

Web Service URL : http://GVAS01903010:6400/dswsbobje/services/session

(http server)

Authentification : !!! the drop down list is locked (no value). I can't select a value.

I also thought the problem was maybe my MS Office version : we still use Office XP (Excel 2002).

Last question : I saw on the documentation reference to a reverse proxy. Do I have to configure a reverse proxy to use Live Office ?

Thanks.

David