I Installed RealVNC to try it out, I don't want to un-install it yet because I might need it.

But I went through the options, and just can see where is the option to STOP the auto start when Windows starts...

Every time I have to right click and choose "Close VNC Server", and I find that really anoying !

I found it in Control Pannel/Services and I set it to Manual run. But I think it is really anoying that cannot do that through it's interface.