USB pocket drives and Java Questions

Is there any way to get a USB pocket drive (also called a keychain drive) working with a Zaurus SL-5600?
 
Also... could someone post a detailed walk-thru on programming with Java ON the Zaurus?  What tools do you need?  Is there a good (free/not free) Integrated Development Environment (IDE) or editor that works best? Any compilers that need to be loaded? Any issues with programming in Java related to licensing and so forth? 
 
I have programmed with free tools/languages before and there were no restrictions as to what I could do with what I produced.  However, I have also programmed with non-free personal editions of some tools/languages (like C++ builder) that put restrictions on redistribrution (ie having to pay for a developer version and/or distribution licenses).  I am new to Java and just wanted to know the state of things.
 
The whole shebang...
 
A tall order, I know, but I have some spare time and would like to develop some tools for myself and possibly the community.  I figured the whole 3G wireless boom and the explosion of hotspots couple with the Jeode environment might make it interesting to get into some J2ME programming.
 
Thoughts?
 
Thanks
 
Jim 
 
*All opinions are my own and not those of anyone else or any other institution.  No one else would want them anyway*