Support on Linux?

Question

Hello. I guess this question must have been asked before, but I couldn't find any topic for it, so here goes: I am a student af the Danish Technical University, and primarily speaks Java. I am part of a project group that has to develop a commercial software for windows/linux/mac (it is vital that it has cross-platform capabilities). We wanna steer clear of Java, as a swing GUI tends to be "heavy" or "hang" a bit. I have seen the Mono Project and that I can develop C# programs in Linux and run it there when the Mono is installed. So here goes my question: "Is there a way that I can make a program in C# and make it run on Linux/Mac without the user having to install Mono to run it?". Hope someone can help :) Thanks... - Dan