What do you mean if you convert it into HTML and then vB? You won't be needing half of the template images. Most of the stuff you can do with CSS, such as the background, page background, postbit background, etc. You'll be only needing few things from your PSD, such as cat images, buttons, banner, and stuff like that. So basically, you don't need to do much coding for a simple template, you'd require some good knowledge only if you want to code some template that requires many edits...