root partition (writable) on USB Stick

[wuschel]

I have a Windows USB Stick creator 
<http://www.linuxusbdownload.com/Debian?XTCsid=d22d7ebf8593c0710b1f44e5efcca29a> 
for Debian live created.
Unfortunately it is for the persistent mode, not possible with the known 
to me and available tools in Windows, a second partition with ext2 to 
create. Is it possible the file initrd.img or vmlinuz to edit, around a 
live-rw storage file on the root partition (writable) to use.

Greetings
wcadman