[ansarigf]

I'm not entirely sure what you're asking. Your Q: Does one have to be a Buddhist to follow the teachings of the Buddha?
My A: That Sutta quote
Why? Going for Refuge & Taking the Precepts
Of course there's always this thought....
http://viewonbuddhism.org/refuge.html
In Buddhism, understanding is the most important thing and understanding takes time. So do not impulsively rush into Buddhism. Take your time, ask questions, consider carefully, and then make your decision. The Buddha was not interested in having a large number of disciples. He was concerned that people should follow his teachings as a result of a careful investigation and consideration of the facts.
From: Good Question, Good Answer by Bhikkhu Shravasti Dhammika