I recommend "Awakening the Buddha Within" by Lama Surya Das. It was one of the first books I read, and it's really attuned to the western way of life and easy to read.
Oh, and thanks for the link to the Sikh page. I was only vaguely aware that I liked their philosophy, but was never really clear why (aside from the Sikh graduate student I had a tiny crush on many years ago.)
Thanks for the recommendation--I don't have it, but I'll see if I can get it from Amazon,