RealPopup

RealPopup provides a capability to chat with other users on the same LAN. It supports many useful features such as options for users and groups, an internal network browser, names auto complete, and so on. RealPopup is available in more than 12 languages. The latest version is 2.6 Build 167. The software is no longer under development, but it will run under versions of Windows through Windows 7.

The realp26_167.exe installation file uses the Inno Setup installer. You can specify the installation directory with the "/Dir=dir" option. Higher level directories will be created, if needed. E.g., in the example below, presuming %PROGRAMFILES% is "C:\Program Files", the directory "c:\program files\Network\RealPopup" does not have to already exist, Both the "Network" and "RealPopup" directory beneath it will be created. You can omit the /Dir option, if you want to accept the default installation directory.

 
<package
   id="RealPopup"
   name="RealPopup"
   revision="1"
   priority="3"
   reboot="false">
 
   <check type="uninstall" condition="exists" path="RealPopup"/>
 
   <install cmd='%SOFTWARE%\Network\RealPopup\realp26_167.exe /sp- /verysilent /Dir="%PROGRAMFILES%\Network\RealPopup"'/>
 
   <upgrade cmd='%SOFTWARE%\Metwork\RealPopup\realp26_167.exe /sp- /verysilent /Dir="%PROGRAMFILES%\Network\RealPopup"'/>
 
   <remove cmd='"%PROGRAMFILES%\Network\RealPopup\unins000.exe" /sp- /verysilent /norestart'/>
 
</package>

Reference:

Installing RealPopup with WPKG