I owe Dr Skip a long round of applause for this one. Thanks, Doc! - - - I have to haul around personally owned files, such as PCB layout tools, invoice writers, password manager, documentation editors of several types. I consult on product designs, like many of us here. Dragging around a laptop was the normal way to do this, but carrying it around my neck would be better. So, I decided to use a USB Flash drive for windows XP, since all my clients use that O/S. I purchased a U3-compatible 4GB Flash Drive. It works adequately but there is no security... what if I LOST the flash drive, and an evil person (or my wife) got it? What I decided was needed was a U3-like setup that could be folded up and tucked away between uses. Dr Skip suggested the use of a TrueCrypt container to hold all of the applications and working files. This means that when you no longer need any file from the container, the container is encrypted properly into background noise. Then if your flash drive falls into evil hands, NO damage is done. I've been testing this for several days at home and at two offices, and it works GREAT. Even better, it is sourceforge and FREE. I built the 3.5GB container, then filled it with portable applications (www.portableapps.com) (apps that will operate within the flash drive and not spill over into other areas.). Not everything can operate from a flash drive, but my PCB layout software and most everything else will. BTW, I stripped U3 out of the hard disk before I went to TrueCrypt; its another bloated $MS thingy and I decided it wasn't for me. And thanks again, Dr Skip! --Bob Axtell -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist