How can anyone possibily estimate payments for you without knowing what you plan to put down? Also, there's going to be a huge difference in price/payments between a base V6 and a 2SS + RS package, sunroof, A6 trans, etc. You can option a 5th gen all the way up to about $38k, plus tax.
Insurance is another tricky one. You didn't state your age or marital status. If you're under 25 and single, you'll be paying quite a bit compared to us older and/or married guys.