Posted 07 September 2008 - 11:24 AM
I think there are a few bits of software that might do what you're asking, but I don't know of any off hand.
If you use different user accounts on that computer, you can use XPs permissions system to deny access to the programs folder to other accounts. If your account is password protected, that will restrict access to the program. It won't help if you leave the computer logged on.
Another alternative would be to use TrueCrypt or a similar piece of software to install the program to an encrypted are, which you can then unlock with a password.
Duct tape is like the force. It has a light side, a dark side, and it holds the universe together