It's really easy to use.
Creating an uSbuntu key is a five easy steps process
step 1 : launch the uSbuntu Live Creator and choose a USB key or drive in the list
step 2 : select a ISO file or CD of Ubuntu/KubuntuXubuntu 8.10 Intrepid Ibex
step 3 : choose the size of persistency data (usually more than 250MB)
step 4 : check the options you want
step 5 : click the thunder to start the creation
Do not forget to use the customized helps (top-right end corner of each step).
Moreover, each needed step (1,2 and 3) has a traffic light to indicate its state. This is the interpretation
Red light : the step is not correctly fulfilled, you cannot start the creation
Orange light : there is a non blocking problem on the step
Green light : everything's fine
Download uSbuntu Live Creator from here
uSbuntu Live Creator Preview