Self signed cert for ssl wan admin

[Sandman]

It appears every time the router reboots it generates a new ssl cert thus requiring me to accept it in my browser. I would like the cert to persist over reboots. I should be able to generate a self signed cert, set it up on the router and my computers and be done with it.

However I'm no Linux guru and not quite sure how to do it.

I found this tomato page: http://tomatousb.org/tut:use-ssl-certificate-for-wan-admin

Should the section for "How to use standard signed SSL certificates" on that page be sufficient?

Thanks in advance.