Paying US taxes from Korea

I'm currently searching for info on how to go about paying US taxes from Korea. If anyone has any info, please send me an e-mail. Here's a couple of links I dug up from Dave's ESL.

http://www.eslcafe.com/forums/korea/viewtopic.php?t=68158&highlight=Taxes

http://www.hrblock.com/taxes/doing_my_taxes/international.html