about "hello mirage world"

["Yiming Zhang" <sdiris@xxxxxxxxx>]

I have finished installing process and successfully run mirage-www. However, 
now I am stuck in the first step of "hello mirage world". First, it is required 
to "have mir-xen in your PATH", but where mir-xen is? And second, the first 
step is to "cd mirage.git/regress", but where mirage.git is?

Thanks! 
Yiming