I decided to try this on my laptop as well but in this case I would COMPLETELY remove Impulse from the system since I didn't have ANY games installed (Stardock titles or 3rd party games installed thru Impulse/GameStop). I first uninstalled all of the desktop applications I could through Impulse (although WindowBlinds appeared as "available" instead of "installed" (which it was)). Then I rebooted the system, went to the Programs & Features control panel and noted which applications still appeared as being installed. Then, using Revo Uninstaller I uninstalled the remaining programs and all traces from the registry of these programs (IconPackager, SkinStudio, WindowBlinds and a few others still appeared as "installed" although they were supposedly removed by Impulse...) as well as removing Impulse from the system.
Next I rebooted the system again, and used CCleaner and Glary Utilities to clean any remaining tracks of the installed programs from the system. I also used Windows Explorer to delete any folders in the Windows Start menu and icons on the Desktop that failed to be removed. Then after another reboot, I downloaded and installed the Stardock Central beta.
I was surprised to note that when I ran Stardock Central this time it found additional programs as being available to download (Demigod, Gal Civ II and Sins of a Solar Empire) as well as the various "current" components of Object Desktop - Gal Civ I did not appear on the available list (I'll download it separately). I also noted that some of the older components (including some that are not shown as legacy components (MyColors, LogonStudio, DesktopX)) did not appear as available downloads in Stardock Central - I'm assuming that these are not fully compatible with Windows 7 and therefore were not shown.
By the way, is there any difference between the applications downloaded thru Stardock Central and the standalone downloads available at the store at Stardock.com? I had previously downloaded all of the applications I could from the site and it appears to take a long time for Stardock Central to download the applications again. I can just run the standalone versions if it's faster and supply the serial number information as needed.
Thanks for the comments and suggestions - I'm trying to make this a clean a process as possible.