I've been toying with this idea myself, and I'm thinking the best way to re-load all of this without re-downloading it all again would be (this is a question, not a statement):
Execute the original downloaded stardockcentralxxx.exe from my hard drive
Execute the other downloaded .exe's (bootskin, logon studio, etc) not really maintained in Stardock Central
Copy my most recent archived full downloads for all of the Stardock programs over to the Stardock backup directory (I always download/archive the new updates and then "Restore" them to install)
Use the Stardock "Restore" option to install them.
Copy all of my downloaded skins, icons, etc from my backed up old directories
Right? I'm a little worried about the WindowBlinds piece because the original full purchase download is about twice the size of the update downloads, but I think that's because it had both the Win98 and XP versions in it?