We currently use HP 5300,5520 and 5700 Terminals with Citrix PS 4 (although due to printing problems we're rolling back to 3). We can successfully use flash memory sticks in the USB ports of the terminals which show up as the A Drive. Due to sensetivity of information we require encryption on the sticks. This is run by a program stored on each stick. When I try to run the program, I get permission errors. How do I get around these.