I would like to protect my USB stick but if i put all applications into a Truecrypt image, I can only use them, if I have administrator privileges which severely limits portability. On the other hand I would like to protect some of the applications, like Thunderbird or Sunbird, while the most could remain free. One possibility would be to install one portable app on a protected portion of the drive, others on the free part, but then you have two menus, making it not an elegant choice. It would like to be able to mount programs into the menu from a truecrypted image. If I click on them, Truecrypt starts and requires a password and after that the application starts. Then I could use the common applications on each computer, only the protected ones require administrator privileges and all applications would have one common menu.