You are leaving out _all_ of the important details for anyone to help you.
What exactly do you mean by this? Does the install process begin? Does it complete? In order for the install to complete, you must tell the software where to install. You must make sure that you are installing it into the RealFlightG3 directory.
I have tried opening program file on G2 & G3 and dragging from one folder to the other and still the Raptors will not show up in G3.
I can't make any sense of this. You can't open an executable from G2 or G3. You say you are dragging something, but you don't say what it is, where you are dragging it to, or where you are dragging it from.
As I have said IT is not there on my G3 pull down menu.
You won't see anything Add-Ons 3 specific on the pull down menus. You will see things specific to Add-Ons 3 is in the Aircraft Selection and Airport Selection dialogs.
If the install worked correctly, you should have a .DCK file in the data directory of your G3 installation that is specific to Add-Ons 3. I cannot recall the name right now, but you will see RFV3_1.DCK and RFV3_2.DCK. You may also have RFV3HELI.DCK and RFV3UPD.DCK. Those are part of the original G3 installation. There should be additional .DCK files for each Add-Ons disk that you install.
If you have a good installation, will also be able to see a RealFlight Add-Ons Volume 3 folder in the _airport_ selection dialog.
If, for some reason, the install is failing you should stop unnecessary programs. You can do this with the task manager which can be found by right-clicking on the taskbar and selecting Task Manager. Stop all anti-virus type software, including Microsoft's Anti-Spyware beta if you've installed that update.
If that doesn't work, call or e-mail technical support. They should be able to help you out.
And by the way, you can run G2 and G3 on the same PC and it doesn't matter which order you install them.
Knife Edge Software