Is there a fast way to get a downloadable list of a sites' subdomains??

[derh]

As I start to build several sites, I want to have a comprehensive list of all my sites sub domains (there several)

Is there a fast way to gather that info??

I was thinking I could do it in Market Samurai but haven't figured out how?

any ideas (instead of the hunt-copy-and-paste-into-Excel way)??