Every school accepts out of state and international. The thing is that as an out of state you have better chances at some school than at others. For example do'nt even try UIC, Southern IL Univ, Georgia, Iowa, Mississippi, Alabama, Univ of Florida, SUNY at Stony and some others unless you have 3.8GPA and 24 DAT. Go for the privite schools like Temple, Tufts, Boston Univ, Columbia, NYU, Nova, UPenn, Case, Marquette, Creighton and some others. Buy the "Official Guide to Dental Schools" from adea.org and you will find all the info you need.
I agree that the ADEA guide is extremely helpful, especially when you want to compare several dental schools at a glance. It lists all the dental schools in the US and Canada. The cost is about $40, I think, but if you don't want to buy it for keeps, the Pre-Health-Professions office at your school (if you are currently a student) probably has a copy that you could look at and photocopy or take notes from.