Help! I haz a question!

[krossero]

Okay, so I don't know if this is a sooper-stoopid thing to not know, but I'm giving my address to someone(guess who! *g*) outside the U.S., and I'm not sure all of what to put.  Is there a country code?  How does she make sure it gets to the U.S. and all that? 

Thanks for your help from the Totally Clueless Person!

*smooches to all*