YOU CAN OBTAIN TAX ID # FROM IRS.THERE IS A SPECIAL FORM FOR THAT.AFTER HAVING THAT ID YOUR WIFE CAN WORK AND EVEN YOU CAN FILE HER IN YOUR TAX RETURN. SS # OR TAX ID # YOU CAN USE FOR YOUR INSURANCE.BUT BEFORE YOU DO THAT CHECK WITH YOUR INSURANCE.
UNFORTUNATELY I DO NOT REMEMBER FORM #, BUT IT IS EASY TO FIND www.irs.gov