How to install AddOns

[anonimo82]

Hello everyone. I've decided to give T3D a try, and I downloaded some AddOns I was interested to.
Now, how can I install them? I briefly had a look at their ReadMe, but I dind't find directions on how to install.
The AddOns I've downloaded are:

• 3D Action Adventure Kit
• Game Mechanics Kit
• Universal AI Starter Kit
• Verve

Please, can you help me installing them?
Do I have to recompile the engine? And if so, which Visual Studio version will I need?

Thanks in advance for any help.

Edit: For what is worth, I also downloaded Torsion and L3DT, do they need special setup operations?