DSL Embedded :: Transfer files

Hi, newbie and first post!

I would like to use dsl when I go to see a friend, keep my information embedded in my USB key (better than reboot and CD size).

One problem is that I can't transfer or access the files on my USB key.
How to create a folder to exchange files from OS embedding, usb key and dsl?
How dsl can access the files?

Also somebody recently post to add a FAT directory in .dat script but I am also using linux and I don't know how to script it in .sh...

Any ideas?
Anyway great job, the embedded version run like a charm under qemu on my linux!

original here.