I have been using this little gem of a program for some time having Firefox, Thunderbird, and several other applications installed on a JumpDrive.
PStart is easy to set up and acts/looks like the Windows Start Menu allowing easy access to Programs installed a portable usb drive.
You can customize the icons for your programs and set up is pretty straight forward. PStart can be made to just sit in the System Tray. Once finished setting up PStart you can then backup your settings if you want.
Excellent little app.
License: Free Details...