SSL apply on a directory or certain pages

Hi,
 
I have requested my web host provider to apply a SSL over the entire domain, as this is the only option available.
 
The trouble is, I am not sure when the SSL is applied over the domain, how do I force certain web pages, the login page to SSL or even pages sitting in a directory. My web host service had mentioned when the SSL is applied over the domain, unless applying code the pages remain as http.
 
Please can someone assist, as I am new to SSL and asp. I am using VB in my contract. Very confused.  I have searched google and posts but have not found a simple clear access?
 
Thanks,
Nijojo.
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