Integrating Gallery with my Website.

Alright I have a couple of question/goals.

To integrate gallery with my website.
To possibly integrate my login for my website, with the gallery database.

For now however i am just concerned with getting gallery to integrate with my website design. Heres the link to my website

http://www.mrhags.com

As you can see it has 3 columns with the center being the biggest, a header and a footer.

I would like to keep the header and left column when doing anything with the gallery, it should be really easy to do, the albums and descriptions of the albums would go into the center part, and then the login, search logout stuff could even go in the footer section. Its just im not sure how this would work, or where i should look to do this. My website is coded in oop php and css so im not quite sure how i would integrate it.

Lets solve this issue first then we can look at the login system.