I tried both and found that the computerised version added nothing to the process and in many ways was inferior. I too am another pencil, track stencil, and paper person and a fan of downloaded Peco points patterns. As soon as you type your customer name and license key in (exactly the same as the name you put when you purchased the license - same case and everything) then this disappears and you have unlimited usage, on any computer.When you purchased the full version you should have received an email like below:Thanks for your purchase of AnyRail.The trial version of AnyRail can be unlockedwith the registration details below.