MeGUI

Program: MeGUI
License: GNU General Public License version 2.0 (GPLv2)
Description: audio/video encoding interface based on open source encoders.
Website: http://sourceforge.net/projects/megui/

There're many registry keys, though I don't know which is relevant:

HKEY_CLASSES_ROOT\Applications\MeGUI.exe
HKEY_CLASSES_ROOT\Local Settings\Software\Microsoft\Windows\Shell\MuiCache\
HKEY_CURRENT_USER\Software\Classes\Applications\MeGUI.exe
HKEY_CURRENT_USER\Software\Classes\Local Settings\Software\Microsoft\Windows\Shell\MuiCache\
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Applets\Regedit\LastKey
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\RADAR\HeapLeakDetection\DiagnosedApplications\MeGUI.exe
HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Tracing\MeGUI_RASAPI32
HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Tracing\MeGUI_RASMANCS

I'd like to use this program from an USB drive or portable HDD if possible, thanks in advance.