OSX Lion: 64-bit Kernel and Extensions NO

I partitioned my hard drive into 2 partitions. 1 installed OSX Snow Leopard and the other OSX Lion.

However, I can't get the OSX Lion to 64-bit Kernel.

I tried to go to terminal and did the

sudo systemsetup -setkernelbootarchitecture x86_64

It says the changes to kernel have been saved. But, when I check on the About this Mac, it still says NO 64-Bit.

Any recommendation?