Hello tricia,

You should:
1. Install build 282: http://www.pgmusic.com/support_windowsupdates.htm#282
2. Disable User Account Control. If you don't want to do that, then you may need to install the Band-in-a-Box and RealBand programs onto your C: drive to get around the security restrictions (You can keep the RealTracks/RealDrums on the external drive though - that is, the \bb\RealTracks and \bb\Drums folders can stay on the USB hard drive)


Andrew
PG Music Inc.