Okay, all, thanks for the attempts re eBlaster on my MacPro. Yes, it was installed as a program designed for Macs. (They have Windows versions too - see it on their site.) And i ran a Mac spyware program and it didn't detect it. The program costs about 100.00 and works too well. The way they did it was to reboot and then hold down a certain key or keys to go to an admin opp on my Mac, set up a new admin account, install the eBlaster, then go back and hide or erase the admin account. Voila, invisible. Don't ask me who did it and why. I just want to get it off and be able at any time, for example, to run a program or hit a series of keys (or whatever) and be told immediately if it or a program like it is running. Come on, there's got to be a simpler way to get the job done. Trust issues in my home? Yes. What can i say?