Chinese people use characters rather than an alphabet, so names cannot be directly translated from English to Chinese. However, Chinese characters can be chosen which approximate the English pronunciation.
Chinese names generally have 3 (sometimes 2) characters. The surname, which is usually 1 character, comes first. Next are one or two characters which are chosen by the parents (or the grandparents in traditional Chinese culture).
Important note for westerners looking for a Chinese name:
Real Chinese names should be chosen by someone who knows the nuances of Chinese language and culture. Ask a native speaker if you want a Chinese name you will actually use!
Popular English names in Chinese
external links:
Chinese names (aboutchinese.info)
Chinese surnames (geocities.com)
The origin of Chinese surnames (c007.com)
Translate your name in Chinese (Chinese-tools.com)
Translation of some popular English names in Chinese (Zhongwen.com)
What is your name？ 你的名字是什么?
中文姓名产生器 (richyli.com)
看看你的英文姓氏