1. look in the database and locate the record for the username and password of the particular user you are doing this for, make note of the value for the UserID primary key column.* Question - Can I access this info from logging into mysql database?
Yes, you get the ID directly from the MySQL database.
2. Go To Modify -> Security Assist -> Access Rules Manager*Question, Is this in Dreamweaver?
Yes, in Dreamweaver Go to Modify -> Security Assist -> Access Rules Manager
* So, when this user logs into my site, they will then have access to this page (assuming that I have added the page link somewhere on my site), or do I send them a link to this page?
yes, when the particular user logs in, they will access to these pages
