Having trouble getting the right version

[Sherlock]

I tried downloading the QtCreator first, for Windows 7 64-bit. I picked this link (Qt Creator 2.8.1 for Windows), rather than one of the VS ones, which I assume mean Visual Studio. When I installed it, I was running 2.4.1, not 2.8.1, and it says it's based on Qt 4.7.4, not 5.1.1 which I need. The reason I want 5.1.1 is to be able to use the QtQuick.controls so I don't have to write my own scrolling text areas and lists.

So, I uninstalled that and went for the Qt Online Installer for Windows (5.1.1), which includes the latest QtCreator. So, that actually did have the latest of both and included the QtQuick.Controls as well. However, that version wouldn't build anything like the emulator or anything, because all it had was a 32-bit version of MinGW. Well, I'm not sure it even installed properly because it would get to about 92% finished and then get some problems on the other MinGW versions I think, but when I said "Retry" it started all over again but this time didn't have an error. So not sure if that is an issue with this particular option or just a one-time error.

Then I tried installing it on ubuntu with the online installer, then found out that the emulator isn't supported on that platform. I was so close, it did everything else.

I'll throw in one other bit of info, that both the Windows 7 and ubuntu machines are virtual, running them with VirtualBox 4.3.4 from a Windows 7 host, and each having 2GB of RAM (the host has 8 GB). I don't think that matters, but just in case.

So it is looking like I can either have the older Qt with no controls, but it does run the emulator, or I can have the newer version that has the controls but doesn't run the emulator. Surely, I must be doing something wrong, so can anyone clue me in on what?

Thanks.