Cant select states from drop down in register/checkout

Hello-

I have a major issue with selecting the states during registration/checkout - I can't. I can select countries but there seems to be a conflict with the javascript to refresh the states per country selected. Please advise.

Could you please provide me with a URL to your website, either here or via PM (click the “Private Message” text underneath my avatar) so that I may analyze it? It is a lot easier for us to diagnose issues when we have a live site to examine.