It pains to think how many pilots are using "jailhouse" lawyers to help them with an very important issue. To screw it up could be VERY expensive.
First, whether you like it or not, if you wish to remain a US citizen (i.e., return to the USA before you die), the IRS will tax you for all income over $91,500 for tax year 2010. Please start by reading the actual form and instructions:
IRS Form 2555
Instructions for Form 2555 (2010)