Try a loan calculator like the one here:
http://autos.yahoo.com/finance/loan-calc/index.html

I have a 72 month loan at somewhere around 5%. I can't remember the exact amount, but I'm paying somewhere around $550-600/month. Go to your bank and see what you can pre qualify for. If you belong to a credit union, you will normally get a better rate than a normal bank. You may want to pay to see what your credit score is now that you have cleaned up your report a bit.