Process.Start("explorer.exe"); won't bring back taskbar

Process.Start("explorer.exe"); won't bring back taskbar

As of right now, I am working on a mock up OS via WinForms to use as a
prop for movies. Upon running the application, it kills explorer.exe so
that you can't accidentally have the windows task bar show up during a
shoot. The issue is, upon closing the mock OS I would like for
explorer.exe to be started up again. However,
Process.Start("explorer.exe"); brings up an explorer window, and does not
re-instate the window taskbar.
I know for a fact, that task manager is more than capable of bringing back
the window taskbar via typing "explorer.exe" under a new task, though I've
had no luck finding command line arguments to pass to task manager.
Edit: I'm running under Windows 7. As well, I'm going pretty in depth with
this mock OS. I'm taking control of quite a few key presses that Windows
uses. For this reason, I kill explorer.exe so that I can use key presses
such as "Alt-Tab" and display a mock app switcher, etc. The app already
runs in full screen, but it is still possible to have the underlying
Windows GUI pop back up. I am essentially replacing explorer.exe with my
own mock up explorer. Upon closing my custom explorer, I can't seem to get
the regular Windows GUI to come back by launching explorer.exe via
Process.Start();.