Luigi, dare I ask what other forum led you to that site? That is just too funny- and everyone should click on the find a hitman link- read some of the stuff on there, it's just plain awesome!
Now that you have an idea of what skill set you need to become an assassin, we can proceed to skill set that are preferred to have:
  1. You look good. An ugly person will have a hard time of getting a job done, looking good always helps no matter what the job us. Appealing to the opposite sex is a plus when considering a job.