The best place to start is here: Using TurboActivate with Real Studio (Real Basic).
Also, as far as I know, Xojo still only creates 32-bit apps, which means you should use the x86 version of TurboActivate.dll and put it in the exact same folder as the generated exe. If, sometime in the future, you can create x64 apps, then (and only then) should you use the x64 TurboActivate.dll.
If you're still having problems then you'll have to give me more information.