DNS Entry

We have 4 locations, each one has a DC windows 2000 server (standard Edition) and each DC is also a DNS. Each site has a frame link back to us and their own internet connection via broadband. We use a WEB application and we want the remote offices to access it through their internet connection instead of the frame link. The Corporate office accesses it through a direct T1 using non public addresses. Since our main DC is the DNS at corporate the others replicata from it. What I want to do is set up a DNS entry in the remote DCs that will direct this app to the internet instead og the frame and direct T1. This entry I do not want to be dynamic. Anyone got a solution?