Retina MBP Windows 7 problems (Boot Camp)

Hi there.

I've had my Retina MBP for a few weeks now, and I'm very pleased with it. Today I decided to install Windows 7 on it, using Boot Camp because i wanna play games like SWTOR. I read a lot of places that Windows 7 takes around 22Gb space so i decided to go with 50Gb on Windows in Boot Camp Assistant.

The installation went fine - nice and quick. But I got a few problems.

First of all I can't get the trackpad to work like in OS X and I also got a message about the USB driver not being installed as it should.

I did follow several guides before installing Windows, so I got all the drivers on my USB drive.

These are all problems that I can live with, since I'm only gonna use Windows for gaming and therefore use a mouse instead of the trackpad.

But my biggest problem is that after I installed windows and opened "my computer" I saw that there was only 10Gb space left!? I mean, all the drivers and stuff takes some space too, but it shouldn't take 40 Gb?? 10Gb just ain't enough for SWTOR which needs around 25 Gb.

So my question is... Does Windows 7 really take around 40Gb space OR have I done something wrong? And more important, what can I do to fix this problem?

Do I have to do it all over again?

I hope somebody can help me.

- Martin