How do I compile for linux on windows?

[waitingforzion]

OK, I have two questions which I am having a hard time finding the answers to.

I have the Qt SDK installed on Windows, but I do not have anything Qt related installed on Linux. (I am running Linux in an emulator). I want to know, is it possible to build a Linux application using the tools I've installed on the windows platform? If so, how can I do it?

Furthermore, I had recently sent a very simple Qt Application along with the necessary dlls in the same directory to my sister for testing. She reported to me that the program would not run. Even on my system, Qt executables always terminate with an error when the necessary dlls are not in the same directory. From my experience and from what I read, I figured all that was needed is those dlls included with the executable. Apparently that's not the case. Does this mean that for a user to run my qt apps they have to download and install the entire Qt Framework? I'm pretty sure I didn't have Qt installed before I installed Google Earth, and it ran perfectly. So clearly I'm lacking some insight. Can someone help me with this?