Hi Maicondoublas, this was what UNC offered me just FYI- don't know if they offered more to other people. Hope you hear back either way soon! Good luck!!
"$15,000 for the 2011-2012 academic year ( requires twelve to fifteen hours per week of departmental service, usually in the form of teaching assistant duties.)...out-of-state tuition ($14,730)... You will only be responsible for paying student fees, which are currently about $1,840 for the first academic year... health insurance premium (worth about $2,270 this year).
Although we are not permitted legally to make binding commitments to fund students beyond their first year of study, I can inform you that, even during our worst budget years, our department has awarded assistantships to our second- through fifth-year students. In other words, you can reasonably expect four additional years of departmental financial aid (for a total of five years of funding), contingent on making satisfactory progress in the program."