Esudfu,
Coming from a different career path is not a problem in the slightest (I came from an optical engineering background), at the end of the day, if you can demonstrate that you have the skills they are looking for then you are in. The main point is finding excellent examples from your current career (and previous history) demonstrating the areas they are asking after. As Crazy Voyager said, they do pretty much tell you what they're after, just expand around those themes.