Wow! Big change .. really big change! I hope you like it.
I have spent the past few days learning the ins and outs of Drupal and all that goes with it. It's quite a system and very powerful. And I have had a great time so far. It's a lot of work, though and not for the faint of heart.
The theme I'm using is a subtheme of Zen. I tried out a few others, especially Omega, but setlled on Zen. It definitely needs some more customization but everything I've done so far has been in CSS (actually SASS which makes it much more manageable.