@Puduhepa , agreeing with @Opus 17 , like to point out -- (a) you need US sourced/connected income and not "taxable income" to file -- Taxable income is Gross Income Less adjustments and deductions. ; (b) as mentioned earlier ITIN are issued only for purposes of filing federal tax returns ( and also used for state returns) and is in lieu of Social Security Number. However unlike Social Security Number , it must be renewed every three years; (c) if you expect to have US sourced/connected income in 2010, you can apply and indeed an get an ITIN if the IRS is assured that you have a need for it; (d) if you are planning to have employees ,as a business you can get an EIN Entity Identification Number and indeed you can file returns with that number.
After all that, I am not sure I understand your need for filing if you do NOT have US sourced / connected income. What are you trying to achieve / do ? As I said your on-line business income is not US sourced income for US tax purposes ( even the IRS told you the same ). Perhaps you need to have a discussion ( preferable face to face ) with a tax professional ( familiar with international filings ) or a tax attorney.
Good Luck
