Dany, if you're not capable of vectorizing the image yourself, why don't you just let Vector Doctor (or similar service) do it for you?
You've probably wasted more time looking than it would have cost to begin with.
I was an art major in college and even though I 'could' redraw, there are times I wouldn't skip a heartbeat and send an image out to be vectorized.
Sometimes it's just not worth the time to do it yourself
Sometimes your time can be put to much better use.