How can I write a "Hello World" app in assembly language?

Possible Duplicate:
how to write hello world in assembler under windows?

I've often heard of applications written using the language of the gods, assembly language. I've never tried though, and I don't even have a clue how to do it.

If I wanted to dabble, how would I go about doing it? I know absolutely nothing about what is required, although presumably some kind of compiler and Notepad.

Just purely out of curiousity, what would I need to write a "Hello World!" application?

Edit to add, I am running Windows 7 64bit

Edit to add, I wonder if there is an assembly language plugin for Visual Studio?