it said I was quite equal. But I am left handed so I have read a lot about brain hemisphears. They say that you are dominate in the oposite side of what hand you are.

Also there is the interesting idea of Spindle Cells a type of long neuron in the brain. Humans and High apes have them. We have about 80,000, where as Gorillas have 16K and Bonobos have 2K. But in Ray Kurzweil's book "The Singularity is near" He shows a study (sorry I dont have the book and I could not find a source for this) that there are 35K in the left brain, and 45K in the right brain.

But there is no proof that this has any connection with being left handed.