I know how to launch a process with Admin privileges from a process using:

proc.StartInfo.UseShellExecute = true;
proc.StartInfo.Verb = "runas";

where proc is a System.Diagnostics.Process. But how does one do the opposite?

If the process you're in is already elevated, how do you launch the new process without admin privileges? More accurately, we need to launch the new process with the same permission level as Windows Explorer, so no change if UAC is diabled, but if UAC is enabled, but our process is running elevated, we need to perform a certain operation un-elevated because we're creating a virtual drive and if it's created with elevated permissions and Windows explorer is running unelevated it won't show up.

Feel free to change the title to something better, I couldn't come up with a good description