I think Sherry may very well have identified your plant!
I don't know why I didn't think of the "Night Blooming Jasmine" (Cestrum nocturnum). I remember years ago my mom liked sleeping with her bedroom window open during the summer but she had difficulty breathing from the overpowering fragrance of the next door neighbor's huge night blooming jasmine. When these wonderful neighbors heard of my moms reaction to the blooms they chopped down their huge plant!
For photo comparison, scroll down this page in the database:
Night Blooming Jasmine (Cestrum nocturnum)
More photo's here:
http://www.google.com/search?q...