[tbran]

Resco Explorer has a nice password-entry encrypter built in to it, but it isn't free. I use it all the time. My other thought is what program are you tying to prevent from starting? Is it starting on bootup from the windows->startup folder? If so, simply remove the shortcut from there. The problem with locking a program is that you will likely get an "unable to load xxx.exe" prompt every time you start up. The better solution is to remove the program or shortcut at it's root, I think.