-A DNS zone file editor. It must be CGI, allow for forward and reverse entries, and able to handle odd mappings (IE IN MX 32 mail.foo.bar, etc).

I've had good experiences so far with ProBIND. It automatically sorts out your forward and reverse entries for you (or you can override it), and has handled all the odd mappings I've needed so far. http://probind.sourceforge.net/ HTH, Jonathan