FilZip
From WPKG | Open Source Software Deployment and Distribution
This is a silent installer for FilZip, a free compression program that supports many formats - see http://www.filzip.com for more info.
<package id='filzip' name='Filzip' revision='1' priority='20' reboot='false' >
<check type='uninstall' condition='exists' path='Filzip 3.06' />
<install cmd='%SOFTWARE%\FilZip\fz306.exe /verysilent' />
<remove cmd='"%PROGRAMFILES%\Filzip\unins000.exe" /silent' />
</package>