Thanks manning 1 and RickeG for the suggestions and precautions on getting an interface. Since I've never done computer-based recording, it's confusing with all the products out there. Some of the interfaces seem to be made for Pro Tools. But, does the software care what interface is used? I've read lots of reviews of software and the wonderful features each make available for recording. But, none talk about the best ways to get your signal (intruments and vocals) into the software. Maybe they assume that any potential buyer is a recording engineer and already knows this stuff.