Importing addresses into TB

I'd like to import my Yahoo or my hotmail addresses into TB. How exactly do I go about this in the easiest possible fashion?

 

for yahoo you can find your answer here: http://help.yahoo.com/l/us/yahoo/mail/yahoomail/manage/manage-10.html

and for hotmail, its very similar. Export from hotmail, then import into thunderbird

 

Thanks. It worked like a charm.