RealVNC
This is a silent installer and uninstaller for RealVNC Free Edition.
For security reasons you are enouraged to upgrade to version 4.1.3: http://www.realvnc.com/products/free/4.1/release-notes.html.
<package id="winvnc4" name="VNC server" revision="1" priority="0" reboot="false">
<check type="uninstall" condition="exists" path="VNC Free Edition 4.1.3" />
<install cmd='regedit /s "%SOFTWARE%\vnc\vnc4.reg"' />
<install cmd='"%SOFTWARE%\vnc\vnc-4_1_3-x86_win32.exe" /sp- /silent /norestart' />
<install cmd='sc config winvnc4 start= demand' />
<remove cmd='"%ProgramFiles%\RealVNC\VNC4\unins000.exe" /SP- /SILENT /NORESTART' />
</package>