I don't have Cakewalk Sound Center (nor can I find anything about it on the Cakewalk site), so I don't know whether or not this will work, but I have used the following method to create a Dimension Pro microhost by adapting an existing Rapture microhost. It turned out to be unnecessary, as I subsequently discovered that there was already an official Dimension Pro microhost available. Anyway,...
Create a folder somewhere away from any VST plug-ins.
Copy the Rapture.exe file into this folder.
Copy the DimPro.dll file into the same folder.
Re-name the DimPro.dll file to Rapture.dll.
Create a shortcut (in your start menu or desktop) to the Rapture.exe file and rename the shortcut to something appropriate.
Running the shortcut launches Dimension Pro.
Maybe some variation of this method will work for you. Substitute Sound Center for DimPro and substitute any of the other rgc:audio softsysnths for Rapture. It may or may not work.