Hi all! It's certainly true that you don't require .HSC sets when using Dimension Pro however, I know of some people who are using the .HSC sets for dimension Pro because it's convenient. For example, if your using CT and you wish to get to various buttons such as the program browser then, you have to choose that part of the interface first. If your using HotSpotClicker then, you can use the keyboard shortcut, Control Shift B and that will open the program browser without the user having to choose to work in that part of Dimensions interface. Also, there are some instances with HotSpotClicker is the only choice, even if your a CT user. For example, any of the new plug-ins such as the ChannelTools, TL64_TubeLeveler, and TS64_TransientShaper in Sonar 8 are only currently accessible with HotSpotClicker. Regards, Phil Muir P J Muir Productions, Music And Audio Production Telephone: US (615) 713-2021 UK+44-1747-821-794 Mobile: UK +44-7968-136-246 E-mail: info@xxxxxxxxxxxx URL: www.philmuir.com/