I downloaded Backtrack 4 Final and burned it to a disc an booted it but when i have to choose how i want to install it, it only gave me two options

snapshot1..jpg

i want to install Backtrack on my C disk (here /dev/sda2) but i only want to install it on the free space and not the whole disk. So i thought i should choose Manual but then it says

snapshot2..jpg

I've got no idea what to choose from, i want it to be like when you install ubuntu and it's installed on a disk an i get an option when i start my computer if that's possible.

Greets, JaimyvS