You need to work with them or they will garnish your wages...without a court order.
You have two options....
rehab.....9 payments and your loan comes out of default. Standard payment would be around $500/month. However by law, you are entitled to "reasonable and affordable" payments based on your income and your balance...this basically means they will lower your payment but dont be looking for a $50 per month payment.
Consoldation....you will be assigned to the Income Contingent Repayment plan...your payment will be based on your income with Direct Loans. Read the sticky section.