consuming webservice with default SSL ?

I am having issues with defining datastore as webserice - REST with default SSL (webservice is offered by another server with default SSL, running on port 443).

HTTP Client error:60 PEER CERTIFICATE CAN'T BE AUTHENTICATED

If we invoke the same RESTP Webservice on the browser, we get warning, and if we continue it works fine. In most of the dev/test environment, we do not install PERM SSL certificate and configure.

Please let me know if any one configured the web service consumption with default SSL and throw some light on how to resolve this issue

Thanks,

Ravi Appala