I'm interested in this, too; except for Apache2 (instead of Nginx)! (Or, should I be switching over to Nginx; but, that's probably a subject for a different thread?) Okay... I'll stop rambling, now.

I suggest taking a look at this: http://nginx.groups.wuyasea.com/articles/how-to-setup-godaddy-ssl-certificate-on-nginx/2

It's supposed to like any other SSL certificate.

@Pablo: http://support.godaddy.com/help/article/5349/installing-ssl-certificate-apache-2x