PhpBB styling/skinning tutorials?

Hey,

Not sure if this is the right forum, but I want to skin my phpBB forum design, and I've tried googling phpBB skinning tutorials, but I can't seem to find any good ones. I've read that the simplest method is just trying to edit the CSS files of one of the default phpBB styles, but I want to make some minor replacements in the HTML as well. My template will look something like this, so it's not TOO different from the prosilver style:

http://jakobgrannas.net/Portfolio/ph...ums_purple.jpg


Thanks!