Help with login page

I am not a professional developer but I have been learning Dreamweaver MX on my
own and have come to a roadblock. I am sure there is a simple solution.

I am using Dreamweaver MX in ASP with MS Access to create a database driven
website. I was able to create a registration and login page that works fine.
I don't know how to get a members information once that member logs in. For
example, lets say Joe Blow logs in to my website and he is member #25. After he
logs in I would like to go to a dynamic page that pulls up all of his
information. I know how to create a page that queries information for all of
the information for member #25, but how to I go from the login page to tell the
next page to get the information for member #25?

Like I said, I am sure this is basic programming but it is all new to me. Any
information would be greatly appreciated.