Hi,
Template should be done in two colors: blue and grey.
Buttons, labels, input fields should be large (Web 2.0)
Clean text (Antialiasing)
Background should be neutral. Light. Could be gradient.
Registration button should be big, and noticeables.
Simple menu. Like google has, with colored line for selected item.
Slider will be "nivo slider". ([login to view URL])
Features section: I need large icon near the title, and the feature description.
So, design should be business/strong