Psi
This is a silent installer and uninstaller for the Psi jabber client.
<package
id="psi"
name="PSI 0.14"
revision="24"
reboot="false"
priority="2">
<check type="file" condition="versionlessorequal" path="%ProgramFiles%\Psi\uninstall.exe" value="0.14.0.1" />
<install cmd='%SOFTWARE%\psi\psi-0.14-win-setup.exe /S' />
<upgrade cmd='%SOFTWARE%\psi\psi-0.14-win-setup.exe /S' />
<remove cmd='%PROGRAMFILES%\Psi\uninstall.exe /S' />
</package>