automatic add request parameter

[Sizzo]

Due to a new web service on our Bea Server we would have to modify all our existing JSPs and Servlets cause this new service requires that all requests have a certain request parameter. Is there a better way then looking through all files and adding this request parameter where a request is send to the server, e.g. automatically adding the request by the Server itself? The parameter would, in most cases, have the same value.