No Quicktime logo in System preferences, how do I register my code for pro?

I have an mbp, I have downloaded the free Quicktime 7 software from the apple store, I bought the Quicktime 7 pro software and received a confirmation email with the registration code. I understand that if I am to update Quicktime 7 to Quicktime 7 Pro I must first locate it in system preferences however, there is no Quicktime in system preferences.

I have genuinely, discovered a way in which to use my registration code and upgrade to the pro version whilst writing this question, I won't need an answer but for the sake of anyone having the same problem that I was having prior to two seconds ago don't worry, it can all be solved by the tab key.

I had a look at the forums that relate to the issue and kirk quick or quick kirk whatever his name is mentioned that "Look under the QuickTime Player 7 menu and click "Registration...". Previously I had tried clicking on the "registration" option in the Quciktime menu list, when I put my details in the only option was to "Buy" ok, I thought, that's clearly not the way to do it and yet, it is. You have to put your name in followed by the code, and then press the tab key, and this activates the software... !?!?! ***, hours spent trolling through forums and the solution is that simple, thanks so much for that.

Looks like I have a question after all, how do you justify missing out a simple and yet quite essential point within the "how to" section of installing the relevant software? How do you expect us to know that bizarrely, entering your registration code followed by pressin the tab key, of which takes you back to the name section of the dialogue box completes the registration?

I've wasted time doing this, and if anything this process has been anything but, quick time... see what I did there? XD