When installing the eSPCW client on a Windows 2008 server, it fails to complete, the configuration menu does not appear and there is no menu item for configuration.
With 64 bit systems you have to run the 64 bit client setup first (located in the 64bit-Client folder), then the SPCW setup, OS-Installers\Vista-2K8-7.
If you've done both of these things then you may have to run the install as administrator, depending on who you're logged in with. Or check that UAC is not preventing the install from completing successfully.
Please read the READ ME FIRST! note included with the setup. Then follow the setup guide to complete the configuration.