workspaces are a "virtual" thing -- the appearance of (usually) four physically separate desktops. you open up outlook, you move it to workspace 2. you open up firefox, you move it to workspace 3. you do whatver your main job is on workspace 1. want to check the web? hit some shit like windows key + 3, do a little browsing, hit whatever combo + 1, go back to work.
i dont really know what there is to support unless your end users are senior citizens who wouldnt get the concept of a virtual desktop.
all of the processes still run under the same explorer hive, and share the same user memory space. some applications are able to supply this now, but they are pieces of shit.