Using USB key for both configuration and home

I use my professional computer for personal perpose at hotel when I am in professional travel. Yes, Idon't want touse Windows out of the office!

I don't have a floppy drive, and hard disk are coded so I can't write on it from Knoppix.

So my only one opportunity is to storre all on a USB Key, but it doesn't work. As I seen in the FAQ I can save both configuration and home fill. Why? How does it work? Is it a bug corrected in a new version? I use Knoppix 3.8.

Bye