Header Area

Hi Again all,

I still need to achieve 2 things and I'm hoping someone can help (apologies again but I am totally new to all this)

1. I need the ability to make the logo bigger without it either messing up the Mega Menu or Overlapping the menu.

2. I want to extend the white frame to include the logo and search box no idea how to do this, I want to keep the 2 sides and the bottom with the grey shade.

Site is at: http://d1160788.cp.blacknight.com/joomla/

Thanks for the help once again,
Fionn