Launch program as admin from user priviledge script

[qwertymodo]

I have an NSIS script that currently runs with only user privileges just fine, but I want to run an external application from my script that requires admin privileges. When I try to do this currently, it just does nothing. Is there any way to elevate the external app that needs it without requiring admin elevation for the whole script? As it stands, if the only answer is to RequestExecutionLevel highest, I will just drop the whole thing. I absolutely do not want to do this, as the external app, while it would be very nice to have that ability, is still a small, non-integral part of the script. Thank you.