DSL Embedded :: How to boot EmbeddedDSL natively?

I am using it normally with qemu without any problem.
I now need to (also) boot it outside any host os.
As I understand what i read i won't have to break any dsl stuff to make it happen.
So with syslinux i boot the usbkey.
The part i need help with is this: dsl files are not in the root directory of the usbkey(eg sda1/) but instead in some other directory(eg sda1/dsl/)
What i have to modify to reflect this?

original here.