I have a concept for a campaign that uses a Dresden-Files environment in a medieval fantasy setting, but for reasons of familiarity and experience prefer to use the Pathfinder system. I specifically need to be able to create stat-blocks for the vampires. I'm not sure I understand the vampire system well enough to create them myself. I understand there is a Dresden-Files RPG, and I don't know of any conversion techniques for Dresden stat block -> Pathfinder stat block. My player characters are built according to standard Pathfinder rules, it's only the monster blocks that need creating.
The Dresden Files is a different paradigm in RPGs than Pathfinder. The concept of statistics doesn't enter into the picture. What you would probably want to do is to take a vampire in Pathfinder, then take the spirit of the Vampires of the Courts in Dresden.
Black Court Vampires (
Red Court Vampires (
@JonathanHobbs suggested in the comments that a slightly increased critical range might be good for modeling the vulnerability in the stomach. I like that approach, though @CRoss suggested a reduction in the natural armor that vampires receive.
White Court Vampires (
For the Raiths, for an example, I'd probably use Charm Person and/or Enthrall, one to represent the attention of the Vampire on one target; the other one their ability to affect a crowd by their presence. Honeyed Tongue might also be appropriate, as the more subtle effect probably better represents their influence.
There are other tweaks- but they won't be direct conversions; the systems just don't lend themselves to that IMO. Just keep the spirit of the vampire, while modeling off of the pathfinder version.