I checked the registry stuffs. In order to not set it up such that all users use litestep, I set HKLM\Software\Microsoft\WindowsNT\CurrentVersion\Winlogon\Shell to:
USR:Software\Microsoft\Windows NT\CurrentVersion\Winlogon

I'm not sure if that will set it so that other users will still be able to use explorer or not, but that's what I'm going for. I want the default shell to be explorer, litestep only for those who want it, but it's not that big of a deal - nobody else really uses this computer besides me.