Hey I was on vacation and missed responding to a few posts. Check out http://losthorizons.com, and Pete Hendrickson's book "Cracking the Code" which he sells there.

Long story short: you only owe taxes if you got money from the federal government. If an individual, or a corporation, paid you, then you don't owe taxes.

Form 4852 is the key, but it's worth the $25 to get the book. Hope this helps!