It is embedded into the controls that have the PLCAddressEntry property. If you put a PLC address in that property, when the control is clicked during run time the keypad will pop up.
Since VS 2010 and 2012 are still free, AdvancedHMI has been changed to use .NET 4. This gives the ability to use the built in Chart control. So that is why 2008 is no longer supported.